Flora of North America species comparison

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Sagittaria guayanensis subsp. guayanensis
Photo is of parent taxon
Habit Herbs, annual or perennial, to 50 cm; rhizomes absent; stolons absent; corms present.
Leaves

submersed, phyllodial, flattened, 4–7 × 0.4–0.8 cm, or floating;

petiole triangular, to 42 cm;

blade sagittate, 3.5–10.5 × 1.5–8.5 cm, basal lobes shorter than to equal to length of remainder of blade.
Inflorescences

racemes, of 1–7 whorls, floating, 0.9–9 × 0.6–4 cm;

peduncles 10.9–22 cm;

bracts distinct or connate less than ¼ total length, broadly lanceolate to linear-lanceolate, 2.8–15 mm, delicate, not papillose; fruiting pedicels spreading to recurved, cylindric, 0.6–2.1 cm.
Flowers

1.2–2 cm diam.;

sepals spreading in staminate, erect in pistillate, enclosing flower or fruiting head;

filaments cylindric, ± equaling anther length, glabrous;

pistillate pedicellate, with ring of sterile stamens.
Fruiting

heads 0.5–1.8 cm diam.;

achenes oblanceoloid, abaxially keeled, 1.7–2.2 × 1.2–1.5 mm, beaked;

faces tuberculate, wings 1–3, ± dentate, glands absent;

beak lateral, erect, 0.2–0.5 mm.

Sagittaria guayanensis subsp. guayanensis
Phenology Flowering summer–fall.
Habitat Rice fields, ephemeral pools, roadside ditches, and streams
Elevation 0–100 m (0–300 ft)
Distribution
from FNA
LA; c Mexico; s Mexico; Central America; West Indies; tropical South America [Introduced in North America]
Source FNA vol. 22.
Parent taxa Alismataceae > Sagittaria > Sagittaria guayanensis
Name authority unknown
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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