| County | Township | Location | Institution | Year | Month | Day |
| Cumberland | Freeport | Brewer South Freeport Marina | University of New Hampshire - Macroalgal Collection (NHA) | 2023 | 8 | 8 |
| Cumberland | Freeport | Brewer Freeport Marina, Freeport, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2018 | 7 | 25 |
| Cumberland | Portland | Portland Harbor Marine, Portland, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2018 | 7 | 25 |
| Lincoln | South Bristol | Inlet near Christmas Cove, along property of the Boothbay Region Land Trust | University of Maryland, Norton-Brown Herbarium (MARY) | 2014 | 8 | 24 |
| York | York | Nubble Light | University of New Hampshire - Macroalgal Collection (NHA) | 2010 | 7 | 26 |
| Lincoln | Edgecomb | Kitzi-Colby Preserve north of Bennett Neck, Edgecomb, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2003 | 4 | 13 |
| Washington | Cutler | Mouth of Little River, Cutler, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2001 | 10 | 13 |
| Cumberland | Harpswell | (Eastern) Bailey's Island, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2001 | 7 | 25 |
| Cumberland | Portland | Evergreen, Peaks Island, Casco Bay, Portland, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 10 | 22 |
| Cumberland | Portland | near marine Civil War Memorial & across from Cushing Island, cove just E of Long Point, Peaks Island, Casco Bay, Portland, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 10 | 22 |
| Cumberland | Portland | opposite Great Trout Pond and bunker, Peaks Island, Portland, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 10 | 22 |
| Cumberland | Portland | Spar Cove, Peaks Island, Casco Bay, Portland, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 10 | 22 |
| Sagadahoc | Georgetown | Reid State Park, Casco Bay, Georgetown, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 10 | 14 |
| Cumberland | Harpswell | Jaquish Island, Casco Bay, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 10 | 2 |
| Cumberland | Harpswell | Ram Island, Casco Bay, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 7 | 6 |
| Cumberland | Harpswell | Ragged Island, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 7 | 6 |
| Cumberland | Harpswell | Pond Island, Casco Bay, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 7 | 6 |
| Sagadahoc | Georgetown | tip of Kennebec Point Road, at private house, opposite Popham Beach, Georgetown, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 7 | 1 |
| Sagadahoc | West Bath | New Meadows River at Leeman Highway, West Bath, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 6 | 25 |
| York | Kittery | Appledore Island, Isles of Shoals, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 6 | 12 |
| Cumberland | Long Island | Little Chebeague Island, Casco Bay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 6 | 10 |
| Cumberland | Cape Elizabeth | Two Lights State Park, Cape Elizabeth, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 6 | 4 |
| Cumberland | Harpswell | Potts Point, (South) Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 5 | 27 |
| Cumberland | Portland | shoreline opposite Great Trout Pond & bunker, Peaks Island, Casco Bay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 3 | 25 |
| Knox | Saint George | Marshall Point Light, near Port Clyde, St. George, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 3 | 16 |
| Knox | Saint George | Watts Cove on St. George River, St. George, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 3 | 16 |
| Lincoln | Newcastle | Damariscotta River just north of Maine Public Lands and Perkins Point, Newcastle, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 3 | 14 |
| Lincoln | Boothbay | Little Ocean Harbor (off Rt. 96), beyond mouth of the Damariscotta River, Linekin Neck, East Boothbay, Boothbay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 3 | 14 |
| Lincoln | Boothbay | Ocean Point, Boothbay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 3 | 14 |
| Sagadahoc | Georgetown | Reid State Park, Georgetown, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 3 | 11 |
| Sagadahoc | West Bath | New Meadows River at Route 1 bridge, West Bath, ME | University of New Hampshire - Macroalgal Collection (NHA) | 2000 | 3 | 9 |
| Cumberland | Cape Elizabeth | Two Lights State Park, Cape Elizabeth, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 12 | 30 |
| Cumberland | Freeport | Cousins River, Freeport, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 12 | 21 |
| Cumberland | Freeport | Winslow Park, Harrasseeket River, South Freeport, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 12 | 21 |
| Cumberland | South Portland | Fort Preble, South Portland, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 12 | 18 |
| Cumberland | Cape Elizabeth | Portland Head Light at Fort William Park, Cape Elizabeth, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 12 | 18 |
| Sagadahoc | Phippsburg | Head Beach and adjacent marsh, Phippsburg, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 12 | 17 |
| Sagadahoc | Phippsburg | tributary 1/8 mile North of Small Pt. Harbor, Route 216, Phippsburg, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 12 | 17 |
| Cumberland | Brunswick | Wharton Point, Maquoit Bay, Brunswick, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 11 | 6 |
| York | Kittery | Seapoint, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 9 | 29 |
| Cumberland | Harpswell | after first loop in road & opposite Peters Cove, Basin Cove, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 9 | 18 |
| Cumberland | Harpswell | near Dolphin Restaurant ( Marina), Basin Point, Potts Harbor, South Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 9 | 18 |
| Cumberland | Harpswell | tip of the Ash Point Cove (Potts Harbor) at Lobster Pound, South Harpswell, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 9 | 18 |
| Cumberland | Harpswell | cove area near the old Harpswell Laboratory, Potts Point, South Harpswell, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 9 | 16 |
| Cumberland | Harpswell | Potts Point, (South) Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 9 | 16 |
| Cumberland | Harpswell | "The steps" at Bailey's Island, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 9 | 7 |
| Cumberland | Scarborough | Spurwink River, Scarborough, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 8 | 6 |
| Cumberland | Harpswell | Bailey's Island, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1999 | 7 | 8 |
| York | Wells | Wells Harbor at mouth of the Webhannet River (near Lord's Lobster Restaurant and next to Harbor Master), Wells, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1998 | 12 | 5 |
| Cumberland | Portland | " The Bluffs", Cliff Island, Casco Bay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1998 | 10 | 6 |
| Cumberland | Chebeague Island | Deer Point, Chebeague Island, Casco Bay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1998 | 9 | 20 |
| Cumberland | Portland | "The Bluffs", (North East) Cliff Island, Casco Bay, Portland, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1998 | 9 | 6 |
| Cumberland | Yarmouth | Little John Island, Yarmouth, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1998 | 8 | 31 |
| Lincoln | Boothbay | Samoset Road near Sawyer Island, off Lakeside Drive, Boothbay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1998 | 8 | 21 |
| Cumberland | Long Island | Andrew's Nubble, Long Island, Casco Bay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1998 | 8 | 16 |
| Cumberland | Harpswell | at boat ramp and bridge off of Prince Point Road, Garnet Strait, New Meadows River, Sebascodegan Island, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1998 | 3 | 8 |
| Washington | Perry | North Perry on Gin Cove Road near Rt. 1, North Perry, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1998 | 2 | 26 |
| York | Kittery | Brave Boat Harbor marsh at bridge off of Seapoint Road that crosses over the tidal tributary delineating Cutts Island, approximately 2.0 kilometers inland from harbor mouth, site T1j, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1998 | 1 | 31 |
| York | Kittery | a narrow tidal channel with contiguous high salt marsh area separating Gerrish and Cutts Island, at the end of the southern tidal channel, approximately 0.39 kilometers inland from the open coast near Sewards Cove, site T1f, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1998 | 1 | 19 |
| York | Kittery | approximately 0.15 kilometers due east of Seapoint Road bridge near Chauncey Creek, site T4b, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1998 | 1 | 19 |
| York | Kittery | Brave Boat Harbor, approximately 0.17 kilometers upstream (i.e. north) from Seapoint Road on the western side of a channel, site T1i, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1998 | 1 | 18 |
| York | Kittery | Brave Boat Harbor marsh at bridge off of Seapoint Road that crosses over the tidal tributary delineating Cutts Island, approximately 2.0 kilometers inland from harbor mouth, site T1j, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1998 | 1 | 3 |
| York | Kittery | Brave Boat Harbor, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1997 | 12 | 26 |
| York | Kittery | Brave Boat Harbor marsh, at innermost bridge pilings (i.e. Beddell Crossing) and near the mouth of a tidal rapids leading from a high and large tide pool, 1.27 kilometers inland, site # 16, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1997 | 12 | 21 |
| York | Kittery | Brave Boat Harbor marsh, site #9, approximately 0.65 km inland from mouth and somewhat diagonal (southwest) from an embayment on the York shoreline, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1997 | 12 | 21 |
| York | Kittery | Brave Boat Harbor marsh, site #9, approximately 0.65 km inland from mouth and somewhat diagonal (southwest) from an embayment on the York shoreline, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1997 | 11 | 14 |
| York | Kittery | Seapoint Beach, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1997 | 11 | 12 |
| York | Kittery | Seapoint Beach, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1997 | 10 | 18 |
| Lincoln | Damariscotta | Salt Bay at Rt. 1 and entrance near Glidden Point, Damariscotta, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1997 | 8 | 3 |
| Sagadahoc | West Bath | New Meadows River at Leeman Highway, West Bath, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1997 | 7 | 16 |
| York | Biddeford | Biddeford Pool, Biddeford, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1997 | 7 | 5 |
| Washington | Lubec | Lubec Neck at International Bridge going to Campobello Island, Lubec, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1997 | 6 | 13 |
| Sagadahoc | Phippsburg | Bald Head, Phippsburg, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 9 | 1 |
| York | York | Cape Neddick, (Nubble Light), York, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 8 | 30 |
| Cumberland | Scarborough | Prout's Neck, Scarborough, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 8 | 27 |
| Cumberland | Brunswick | New Meadows River at Lehman Highway, Brunswick, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 8 | 9 |
| Lincoln | Bristol | Rachel Carson Salt Pond Preserve, Chamberlain, Bristol, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 8 | 9 |
| Sagadahoc | Georgetown | Reid State Park, mouth of the Sheepscot River, Georgetown, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 8 | 8 |
| Cumberland | Chebeague Island | Deer Point, Casco Bay, (Great) Chebeague Island, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 7 | 21 |
| Sagadahoc | Arrowsic | Back River at bridge near Old Stage Road, Arrowsic, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 6 | 19 |
| Sagadahoc | Georgetown | Sheepscot River near Five Islands and Love Nest snack bar, Georgetown, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 6 | 19 |
| Lincoln | Damariscotta | Glidden Point, Damariscotta River at entrance to Salt Bay, Damariscotta, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 5 | 18 |
| Washington | Milbridge | Narraguagus River, end of Fickett Point Road, Milbridge, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 4 | 18 |
| Hancock | Deer Isle | Inner Harbor, at Rt. 15 bridge, Deer Isle town line, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 3 | 25 |
| Hancock | Deer Isle | Inner Harbor bridge at Rt.15, near Stonington/Deer Isle boundry, Deer Isle, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 3 | 25 |
| Cumberland | Portland | (Southwest) Peaks Island, Casco Bay, Portland, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 3 | 23 |
| Knox | Vinalhaven | Lane's Island Preserve, Vinalhaven, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 3 | 14 |
| Washington | Harrington | Ripley Neck, near Hog Island, Harrington, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 3 | 13 |
| Knox | Saint George | Marshall Point Light, Port Clyde, St. George, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 2 | 10 |
| Lincoln | Bristol | Long Cove off of Rt. 32, Chamberlain Village, Bristol, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 2 | 1 |
| Cumberland | Scarborough | Higgins Beach, Scarborough, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1996 | 1 | 26 |
| Lincoln | Boothbay | Damariscotta River at Farnham Point area off of Rt. 96 and opposite Rutherford Island, East Boothbay, Boothbay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 12 | 29 |
| Lincoln | Boothbay | Ocean Point, Boothbay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 12 | 29 |
| Cumberland | Brunswick | Wharton Point off of Dunganuc Road, Maquoit Bay, Brunswick, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 12 | 4 |
| Lincoln | Boothbay Harbor | downtown area near walkway, Boothbay Harbor, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 11 | 20 |
| Lincoln | Southport | exposed west side at Newagen, Southport Island, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 11 | 20 |
| Lincoln | Southport | Hendrick's Head Light, Southport Island, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 11 | 20 |
| Lincoln | Boothbay Harbor | Spruce Point, Boothbay Harbor, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 11 | 20 |
| Lincoln | Edgecomb | Parsons Creek bridge area off of Cross River and Mill Rds, Edgecomb, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 11 | 1 |
| Cumberland | Scarborough | Pine Point Beach, Scarborough, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 10 | 28 |
| Sagadahoc | Georgetown | Reid State Park, Georgetown, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 10 | 27 |
| Lincoln | Bristol | Long Cove Point and adjacent cove, Chamberlain, Bristol, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 10 | 21 |
| Knox | Vinalhaven | Lanes Island Preserve, Penobscot Bay, Vinalhaven, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 10 | 20 |
| Lincoln | Bristol | Rachel Carson Salt Pond Preserve, Pemaquid Neck, Bristol, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 10 | 20 |
| Knox | Vinalhaven | Town pier/boat access near Tidewater Motel, Vinalhaven, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 10 | 20 |
| Waldo | Northport | Saturday Cove, Penobscot Bay, Northport, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 10 | 1 |
| Lincoln | Boothbay | Ocean Point, opposite Rams Island Light and at 1st Street, Boothbay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 9 | 29 |
| Lincoln | Boothbay | Back River at Samoset road near Sawyer Island, Boothbay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 9 | 28 |
| Sagadahoc | Phippsburg | Isiah Head, Phippsburg, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 9 | 9 |
| Cumberland | Long Island | Andrew's Nubble, Casco Bay, Long Island, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 9 | 1 |
| Sagadahoc | Phippsburg | Bald Head, Phippsburg, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 8 | 28 |
| York | Kennebunkport | Vaughn Island, Kennebunkport, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 8 | 28 |
| Cumberland | Harpswell | end of Bailey's Island at Rt. 24 & behind Jaquish Island, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 8 | 27 |
| Cumberland | Portland | Peaks Island, Casco Bay, Portland, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 8 | 26 |
| Cumberland | Chebeague Island | Deer Point, (Great) Chebeague Island, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 8 | 16 |
| Lincoln | Damariscotta | Glidden Point, Damariscotta River, entrance to Salt Bay, Damariscotta, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 8 | 14 |
| Cumberland | Portland | (Southwest) Cliff Island, Casco Bay, Portland, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 8 | 4 |
| Cumberland | Portland | cove between Little and Great Diamond Islands, (i.e. Casco Bay), Portland, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 8 | 3 |
| Sagadahoc | West Bath | end of Mountain Road, New Meadows River, West Bath, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 8 | 1 |
| Sagadahoc | Phippsburg | mouth of the Basin, off of the Meadowbrook River, Phippsburg, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 8 | 1 |
| Cumberland | Harpswell | Bailey's Island bridge at Rt. 24, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 7 | 30 |
| Lincoln | Bristol | entrance to Pemaquid River at Pemaquid Harbor and just upstream from Fort William Henry, Bristol, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 7 | 19 |
| Lincoln | Bremen | Turners Cover, near Broad Cove on the Medomak River, Bremen, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 7 | 19 |
| Lincoln | South Bristol | Foster Point, South Bristol, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 7 | 12 |
| Hancock | Blue Hill | Blue Hill Falls, Blue Hill, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 7 | 9 |
| Knox | South Thomaston | boat ramp on Weskeag River, South Thomaston, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 7 | 3 |
| Knox | Saint George | Tenants Harbor boat ramp and town landing, next to Cod End Seafood Restaurant, St. George, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 7 | 3 |
| Waldo | Searsport | Moose Point State Park, Belfast Bay, Searsport, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 6 | 20 |
| York | Saco | Little Stratton Island, Old Orchard Beach, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 6 | 19 |
| Hancock | Castine | Morse Cove at junction of Rts. 166 & 166a, i.e. Penobscot River, Castine, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 6 | 18 |
| Lincoln | Damariscotta | Damariscotta Reversing Falls at Business Rt. 1, Damariscotta River, Damariscotta, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 6 | 16 |
| York | York | York River at Sewall Bridge, York, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 6 | 15 |
| York | South Berwick | Salmon Falls River at William A. Bray Memorial Park, south of Route 101 bridge, South Berwick, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 6 | 15 |
| Sagadahoc | Phippsburg | Head Beach, Phippsburg, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 6 | 10 |
| Lincoln | Boothbay | tidal pond, East Boothbay, Boothbay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 5 | 19 |
| Cumberland | Long Island | Andrew's Nubble near South beach, Long Island, Casco Bay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 5 | 14 |
| Cumberland | Scarborough | Higgins Beach, Scarborough, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 5 | 6 |
| York | Old Orchard Beach | Googin's Rock near Ocean Park, Old Orchard Beach, Maine | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 5 | 3 |
| York | Wells | i.e. just north of Webhannet River breakwater, Drake Island Beach, Wells, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 5 | 1 |
| Hancock | Mount Desert | Pretty Marsh Harbor at Indian Point Road, Mount Desert, Mount Desert Island, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 4 | 18 |
| Washington | Harrington | Ripley Neck, opposite Hen Island, Ripley, Harrington, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 4 | 17 |
| Hancock | Mount Desert | Seal Harbor, Mount Desert, Mount Desert Island, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 4 | 15 |
| Hancock | Deer Isle | Gray Cove, Deer Isle, Deer Isle, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 4 | 15 |
| Hancock | Deer Isle | Sunshine, Stinson Neck, Deer Isle, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 4 | 15 |
| Sagadahoc | Phippsburg | Head Beach, Phippsburg, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 3 | 28 |
| Hancock | Southwest Harbor | Seawall, Southwest Harbor, Mount Desert Island, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 3 | 25 |
| Hancock | Blue Hill | Blue Hill Falls at Rt. 175, i.e. at a retaining wall with an opening in front of Salt Pond, Blue Hill, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 3 | 4 |
| Hancock | Blue Hill | Blue Hill Falls, beyond the retaining wall with a narrow opening to Salt Pond at Rt. 175, Blue Hill, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 3 | 4 |
| York | Kittery | Seapoint, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 2 | 23 |
| York | Ogunquit | Perkins Cove, Ogunquit, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 2 | 22 |
| Cumberland | Harpswell | Basin Cove Falls, (South) Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 2 | 20 |
| Cumberland | Harpswell | (East) Bailey's Island, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 2 | 20 |
| Knox | South Thomaston | Weskeag River at Rt. 73 bridge, South Thomaston, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 2 | 11 |
| Sagadahoc | Georgetown | Reid State Park, Georgetown, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1995 | 2 | 10 |
| Sagadahoc | Georgetown | Reid State Park, Georgetown, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 11 | 27 |
| Washington | Pembroke | Reversing Falls Park, Cobscook Bay, Pembroke, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 10 | 8 |
| Hancock | Trenton | Oldhouse Cove mudflat, Bar Harbor, Mount Desert Island, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 10 | 6 |
| Sagadahoc | Georgetown | Goose Rock Passage, junction of Sasanoa and Little Sheepscot Rivers, Georgetown, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 10 | 2 |
| Sagadahoc | Georgetown | north end of Beal Island and in the middle of the Hellsgate area, Sasanoa River, Georgetown, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 10 | 2 |
| Sagadahoc | Georgetown | south tip of Beals Island and south of the Hellsgate area, Sasanoa River, Georgetown, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 10 | 2 |
| Cumberland | Cape Elizabeth | Fort Williams, Cape Elizabeth, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 9 | 17 |
| Hancock | Sedgwick | Benjamin River at Rt. 175 Bridge, Sedgwick, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 9 | 11 |
| Lincoln | Boothbay | Ocean Point, Boothbay, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 9 | 7 |
| Cumberland | Harpswell | end of Rt. 24, Bailey Island, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 9 | 6 |
| Knox | Vinalhaven | Lane's Island Preserve, Vinalhaven, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 8 | 25 |
| Lincoln | Bristol | Pemaquid Point, Bristol, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 8 | 15 |
| Lincoln | Bristol | Round Pond Boat ramp off Rt. 32, Muscongus Sound, Bristol, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 8 | 15 |
| Lincoln | Bremen | Western Brook, mouth of, in Broad Cove, at boat ramp just north of Turner Corner and off of Storer Rd, Bremen, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 8 | 15 |
| York | Wells | mouth of the Little River and adjacent salt marsh, Wells National Estuarine Research Research, Wells, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 8 | 9 |
| York | Wells | mouth of Webhannet River, at breakwater on South side of River and at end of Beach Road, Wells, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 8 | 8 |
| Cumberland | Portland | just upstream from Rt. 77 on the Fore River, Pleasantdale Cove area, Portland, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 7 | 27 |
| Cumberland | Scarborough | at the end of Catherine Road (i.e. a dead end road) & Black Point, Scarborough, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 7 | 24 |
| Washington | Harrington | an embayment area on Mill river opposite from Oak Point and off of Rays Point Road, Harrington, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 7 | 22 |
| Washington | Harrington | an embayment area on the Mill River, opposite from Oak Point and off of Rays Point Road, Harrington, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 7 | 22 |
| Washington | Addison | at boat ramp on the West Branch of Pleasant River (leading into Branch Brook), Addison Rd, Addison, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 7 | 22 |
| Washington | Addison | at boat ramp on West Branch of the Pleasant River (leading into Branch Brook), Addison Rd, Addison, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 7 | 22 |
| Washington | Addison | i.e. on the east side of the peninsula with an offshore island, Moose Neck Peninsula, South Addison, Addison, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 7 | 20 |
| Washington | Harrington | tip of Ripley Neck facing Pleasant Bay, Harrington, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 7 | 19 |
| Lincoln | Monhegan Island Plantation | Pebble Beach Cove, sheltered north side, Monhegan Island, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 7 | 17 |
| York | Kennebunk | Parsons Beach, mouth of the Mousam River, Kennebunk, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 7 | 16 |
| York | Kennebunk | Mousam River at Route 9, Kennebunk, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 7 | 11 |
| York | York | Cape Neddick Campground, at Route 1A bridge and adjacent sandy/rocky beach, York, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 7 | 10 |
| Sagadahoc | Georgetown | Reid State Park, Georgetown, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 6 | 30 |
| Lincoln | Nobleboro | Oyster Creek, Salt Bay, Nobleboro, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1994 | 6 | 15 |
| York | Kittery | east side of Appledore Island, Isles of Shoals, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1993 | 10 | 14 |
| York | Biddeford | Fletcher's Neck, Biddeford Pool, ME | University of Connecticut (CONN) | 1991 | 10 | 5 |
| York | Kittery | lower intertidal, Smuttynose Island, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1985 | 10 | 19 |
| York | York | York River Estuary, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1984 | 12 | 14 |
| York | York | York River Estuary, # 2 intertidal, York, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1984 | 12 | 1 |
| York | York | York River Estuary, York, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1984 | 11 | 30 |
| Cumberland | Cape Elizabeth | Dyer's Cove, Cape Elizabeth | University of North Carolina at Chapel Hill Herbarium (NCU) | 1984 | 9 | 23 |
| Hancock | Mount Desert | Seal Harbor | College of the Atlantic Herbarium (HCOA) | 1980 | 12 | 3 |
| York | Kennebunkport | Vaughn's Island, Kennebunk Port | University of Maine Herbaria (MAINE) | 1980 | 2 | |
| York | Eliot | intertidal zone located across Piscataqua River (in Maine) from PSCO Schiller Plant, station 17D, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1978 | 11 | 7 |
| York | Eliot | located across Piscataqua River (in Maine) from PSCO Schiller Plant, station 17D, SCUBA, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1978 | 11 | 1 |
| York | Kittery | Appledore Island, north side, Isles of Shoals, Kittery, ME | University of South Florida (USF) | 1978 | 7 | 1 |
| York | Eliot | intertidal zone located across from PSCO Schiller Plant on Piscataqua River, station 17d, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1978 | 7 | |
| York | York | York River, north bank just downstream from Rice's Bridge, York, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1978 | 5 | 31 |
| York | Eliot | near the site of the Schiller Power Plant, Piscataqua River, station # 17, SCUBA, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 11 | 3 |
| York | Kittery | Seapoint Beach, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 10 | 2 |
| York | Kittery | Seapoint, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 10 | 2 |
| York | Kittery | Seapoint Beach, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 10 | 1 |
| York | Eliot | Piscataqua River, north bank just downstream from Frankfort Island and near public landing, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 8 | 17 |
| York | Eliot | east bank of the Piscataqua River, just upstream from Adlington Creek and near a large public dock, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 8 | 17 |
| York | Kittery | Duck Island, Isles of Shoals, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 8 | 17 |
| York | Kittery | Smuttynose Island, Isles of Shoals, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 8 | 16 |
| York | Eliot | Piscataqua River, east bank, south of Sturgeon Creek, as well as opposite of and south east of Riverside Drive, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 8 | 2 |
| York | Eliot | Piscataqua River, east bank, first major promontory upstream from Stacy Creek, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 8 | 2 |
| York | Eliot | Piscataqua River, east bank. opposite and somewhat south of Roberts Road, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 8 | 2 |
| York | Eliot | near the site of the Schiller Power Plant, Piscataqua River, station # 17, SCUBA, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 7 | 28 |
| York | Eliot | near the site of the Schiller Power Plant, Piscataqua River, intertidal, station # 17, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 7 | 26 |
| York | Kittery | Smuttynose Island, Isles of Shoals, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 6 | 22 |
| York | Eliot | near the site of the Schiller Power Plant, Piscataqua River, station # 17, SCUBA, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1977 | 5 | 5 |
| York | Eliot | near the site of the Schiller Power Plant, Piscataqua River, intertidal, station # 17, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1976 | 11 | 12 |
| York | Eliot | near the site of the Schiller Power Plant, Piscataqua River, subtidal, station # 17, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1976 | 11 | 5 |
| York | Eliot | near the site of the Schiller Power Plant, Piscataqua River, intertidal, station # 17, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1976 | 9 | 1 |
| York | Eliot | near the site of the Schiller Power Plant, Piscataqua River, subtidal, station # 17, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1976 | 4 | 28 |
| York | Kittery | low intertidal, Malaga Island, Isles of Shoals, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1976 | 4 | 16 |
| York | Kittery | low intertidal zone, Smuttynose Island, Isles of Shoals, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1976 | 4 | 16 |
| Hancock | Winter Harbor | Schoodic Pt., Winter Harbor | University of Maine Herbaria (MAINE) | 1976 | 4 | 5 |
| York | Eliot | end of Long Reach Farm, intertidal, station # 17, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1975 | 11 | 11 |
| York | Eliot | Schiller Power Plant, subtidal, station 17d, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1975 | 11 | 4 |
| York | Kittery | low-upper intertidal, west side of Appledore Island, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1975 | 10 | 1 |
| York | Eliot | end of Long Reach Farm, intertidal, station # 17d, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1975 | 8 | 1 |
| York | Eliot | near the site of the Schiller Power Plant, Piscataqua River, subtidal, station # 17, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1975 | 7 | 23 |
| Washington | Beals | Great Wass Island, Washington Co. | University of Maine Herbaria (MAINE) | 1975 | 7 | 11 |
| Washington | Beals | Great Pond, Great Wass Island, Washington Co. | University of Maine Herbaria (MAINE) | 1975 | 7 | 3 |
| York | Eliot | end of Long Reach Farm, intertidal, station # 17d, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1975 | 5 | 15 |
| York | Ogunquit | floating free in an upper level tidal pool, Bald Head Cliff, Ogunquit, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1975 | 5 | 15 |
| York | Eliot | near the site of the Schiller Power Plant, Piscataqua River, subtidal, station # 17, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1974 | 11 | 14 |
| York | Eliot | near the site of the Schiller Power Plant, Piscataqua River, subtidal, station # 17, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1974 | 5 | 14 |
| York | Eliot | near the site of the Schiller Power Plant, Piscataqua River, intertidal, station # 17, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1973 | 11 | 6 |
| York | Eliot | near the site of the Schiller Power Plant, subtidal, station # 17, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1973 | 11 | 5 |
| York | Eliot | near the site of the Schiller Power Plant, subtidal, station # 17, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1973 | 8 | 13 |
| York | York | Nubble Head, York, ME | University of South Florida (USF) | 1973 | 7 | 24 |
| York | Eliot | near the site of the Schiller Power Plant, intertidal, station # 17d, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1972 | 11 | 16 |
| York | Eliot | Piscataqua River, intertidal, site 17D, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1972 | 8 | 1 |
| Hancock | Unknown | Acadia National Park | University of Maine Herbaria (MAINE) | 1972 | 3 | 5 |
| York | Eliot | Piscataqua River, intertidal, site 17D, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1971 | 11 | 29 |
| York | York | Bald Head Cliff | University of Vermont, Pringle Herbarium, Algae Collection (VT) | 1971 | 10 | 16 |
| York | York | Cape Neddick, York, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1971 | 9 | 30 |
| York | Eliot | Piscataqua River, intertidal, site 17D, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1971 | 9 | 15 |
| York | Eliot | opposite the Schiller Power Plant, on the Maine side of the river, Piscataqua River, subtidal, station # 17, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1970 | 9 | 14 |
| York | Eliot | near the Schiller Power Plant, Piscataqua River, intertidal, station # 21, Eliot, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1970 | 9 | 11 |
| Hancock | Deer Isle | Goose Cove, Deer Isle | New York State Museum (NYS-NYS) | 1969 | 8 | 11 |
| York | York | Nubble Point Lighthouse, York, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1966 | 9 | 16 |
| Lincoln | Damariscotta | Damariscotta River (above bridge) | University of Maine Herbaria (MAINE) | 1966 | 7 | 3 |
| Lincoln | South Bristol | Glidden Ledge, Damariscotta River | University of Maine Herbaria (MAINE) | 1964 | 9 | 20 |
| Hancock | Deer Isle | Deer Isle mudflats | University of Maine Herbaria (MAINE) | 1961 | 7 | 4 |
| Lincoln | Southport | Southport: Squirrel Island. | New York State Museum (NYS-NYS) | 1947 | 7 | 12 |
| Sagadahoc | Phippsburg | Small Point, ME | University of Connecticut (CONN) | 1947 | 5 | 8 |
| Cumberland | Harpswell | Whaleboat Island, Casco Bay | University of Michigan (MICH) | 1938 | 8 | 14 |
| York | Kittery | Cedar Island, Isles of Shoals, Kittery, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1937 | 7 | 28 |
| Knox | Saint George | Lighthouse Point. | Butler University (BUT) | 1935 | 8 | 21 |
| Cumberland | Cape Elizabeth | Rock pools. Pond Cove. | University of Washington (WTU) | 1929 | 0 | 0 |
| Cumberland | Cape Elizabeth | Pond Cove | University of Michigan (MICH) | 1928 | 1 | 18 |
| Cumberland | Cape Elizabeth | Pond Cove | University of Michigan (MICH) | 1927 | 8 | 17 |
| Cumberland | Falmouth | Casco Bay, Falmouth Foreside | The New York Botanical Garden (NY) | 1927 | 7 | 25 |
| Cumberland | Portland | Peaks Island, Casco Bay | University of Michigan (MICH) | 1916 | 9 | |
| Cumberland | Harpswell | Flag Island, Harpswell, ME | University of New Hampshire - Macroalgal Collection (NHA) | 1915 | 10 | 3 |
| Cumberland | Long Island | Long Island. Casco Bay | The New York Botanical Garden (NY) | 1902 | 9 | 1 |
| Lincoln | Bristol | Bristol, Maine | The New York Botanical Garden (NY) | 1901 | 7 | 14 |
| Hancock | Brooksville | Cape Rosier, ME | University of Connecticut (CONN) | 1898 | 7 | 0 |
| Knox | Cushing | Cushing | The New York Botanical Garden (NY) | 1888 | 7 | 16 |
| York | Kennebunkport | Kennebunkport, ME | Farlow Herbarium (Harvard University) (FH) | 1883 | 7 | |