Araceae - arum family
[information to be added]

Maine is home to 10 species in 7 genera (hybrids excluded). If you know which species you have or are interested in learning about, click on the appropriate link from the species list below. Otherwise, to determine which genus the plant you have belongs to, refer to the table below the species list.

   Arisaema (1 species)
      Arisaema triphyllum - Jack-in-the-pulpit
   Calla (1 species)
      Calla palustris - wild calla
   Lemna (2 species)
      Lemna minor - common duckweed
      Lemna trisulca - ivy-leaved duckweed
   Peltandra (1 species)
      Peltandra virginica - green arrow-arum
   Spirodela (1 species)
      Spirodela polyrrhiza - common duck-meal
   Symplocarpus (1 species)
      Symplocarpus foetidus - skunk-cabbage
   Wolffia (3 species)
      Wolffia borealis - northern water-meal
      Wolffia brasiliensis - Brazilian water-meal
      Wolffia columbiana - Columbian water-meal

red font = character state unique or nearly so	leaf type	leaf and flower timing	spadix color	fruit color
Arisaema triphyllum	compound	flower at same time as leaves	purple and green stripes	red
Calla palustris	simple	flower at same time as leaves	white	red
Lemna
Peltandra virginica
Spirodela polyrrhiza
Symplocarpus foetidus	simple	flower precedes leaves	red, sometimes with light markings	concealed
Wolffia

Arisaema (Jack-in-the-pulpit)
[information to be added]

Arisaema triphyllum (Jack-in-the-pulpit) - [information to be added]

(click on image to enlarge)

Calla (calla)
[information to be added]

Calla palustris (wild calla) - [information to be added]

(click on image to enlarge)

Lemna (duckweed)
[information to be added]

	char. 1	char. 2	char. 3	char. 4
L. minor
L. trisulca

Lemna minor (common duckweed) - [information to be added]

Lemna trisulca (ivy-leaved duckweed) - [information to be added]

Peltandra (arrow-arum)
[information to be added]

Peltandra virginica (green arrow-arum) - [information to be added]

Spirodela (duck-meal)
[information to be added]

Spirodela polyrrhiza (common duck-meal) - [information to be added]

Symplocarpus (skunk-cabbage)
[information to be added]

Symplocarpus foetidus (skunk-cabbage) - From left to right below is the order in which this plant appears during the year. The spathe with the enclosed spadix of flowers is sometimes seen sticking up through the snow. While the spathe is withering, the leaves are emerging. Finally only the leaves are present.
      
(click on an image to enlarge)

Wolffia (water-meal)
[information to be added]

red font = character state unique or nearly so	char. 1	char. 2	char. 3	char. 4
W. borealis
W. brasiliensis
W. columbiana

Wolffia borealis (northern water-meal) - [information to be added]

Wolffia brasiliensis (Brazilian water-meal) - [information to be added]

Wolffia columbiana (Columbian water-meal) - [information to be added]

Note:
   1. Taxonomy and nomenclature follow Flora Novae Angliae by Arthur Haines (2011, Yale University Press, ISBN 978-0-300-17154-9).