Flora of North America species comparison

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Elatine brachysperma

short-seed waterwort
Habit Herbs, submersed or emersed on wet substrates, 0.5–3(–5) cm.
Stems

ascending or prostrate, branched.
Leaves

reddish green;

stipules lanceolate, 0.5–0.6 mm, margins dentate, apex acute;

petiole (0–)1–3 mm;

blade narrowly oblong to ovate, 3–8 × 1–3 mm, base cuneate to rounded, apex rounded to obtuse.
Pedicels

0–0.4 mm, erect.
Flowers

sepals (2–)3, equal, oblong-ovate, 1.1–1.3 × 0.3 mm;

petals 3, pinkish, elliptic or ovate, 1–1.5 × 0.5 mm;

stamens 3;

styles 3.
Capsules

globose, 3-locular, 1.1–1.7 mm diam.
Seeds

(6–)10–15 per locule, oblong, straight or curved to 30°, 0.3–0.5 × 0.1–0.3 mm;

pits ± round, length 1–2 times width, in 6(–8) rows, (9–)14–17 per row.

Elatine brachysperma
Phenology Flowering summer–early fall.
Habitat Muddy shores, often of ponds or reservoirs.
Elevation 0–1500(–2200) m. (0–4900(–7200) ft.)
Distribution
from FNA
AL; AZ; CA; GA; IL; LA; MT; NE; NM; NV; OH; OK; OR; TX; WA; WY; BC; Mexico (Baja California); South America (Argentina)
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 12, p. 353.
Parent taxa Elatinaceae > Elatine
Sibling taxa
E. ambigua, E. americana, E. californica, E. chilensis, E. heterandra, E. minima, E. ojibwayensis, E. rubella, E. triandra
Synonyms Alsinastrum brachyspermum, E. obovata, E. triandra var. brachysperma, E. triandra var. obovata, Potamopitys brachysperma
Name authority A. Gray: Proc. Amer. Acad. Arts 13: 361, 363. (1878)
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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