How to Tell Apart Mini-guide << view all mini guides S E A W E E D Membranoptera fabriciana Winged Weed Euthora cristata Crested Spermwell Download PDF Text by Jordan Chalfant Photos by Jordan Chalfant Design by Celeste Mittelhauser Share Related Mini Guides Mini Guide Dumontia contorta & Devaleraea ramentacea by Jordan Chalfant Mini Guide Filamentous Brown Seaweeds vs. Tube-forming Diatoms by Jordan Chalfant Mini Guide Common Brown Seaweed Blades: Part 3 by Jordan Chalfant