Flora of North America species comparison

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Elodea bifoliata

two-leaf waterweed
Leaves

sometimes in 2s, spreading, linear to narrowly elliptic, 4.7–24.8 × (0.8–)1.8–4.3 mm, flat.
Inflorescences

staminate spathes cylindric, 10.2–42 mm;

peduncles abscissing following anthesis; pistillate spathes linear, 9–67 mm.
Flowers

unisexual; staminate flowers: stamens 7–9;

pedicels remaining briefly following anthesis;

inner 3 filaments connate proximally, forming column;

anthers 3–4.5 mm;

pollen in monads; pistillate flowers: styles 2.3–3 mm.
Seeds

ellipsoid, 2.8–3 mm, densely covered with long hairs.

Elodea bifoliata
Phenology Flowering summer–fall.
Habitat Waters of rivers and reservoirs
Elevation 100–2500 m (300–8200 ft)
Distribution
from FNA
CO; ID; KS; MN; MT; ND; NM; OR; SD; UT; WY; AB; BC; MB; SK
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 22.
Parent taxa Hydrocharitaceae > Elodea
Sibling taxa
E. canadensis, E. nuttallii
Synonyms E. longivaginata
Name authority H. St. John: Research Studies of the State College of Washington 30(2): 23. (1962)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

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