Flora of North America species comparison

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Ruppia maritima

beak ditch-grass, ditch grass, ruppie maritime, sea ditch-grass, spiral ditch-grass, western ditch-grass, widgeon-grass, wigeongrass
Stems

to 50 cm × 0.1–0.7 mm.
Leaves

6–10.5 cm;

blade 0.3–0.5 mm, apex ± obtuse.
Inflorescences

peduncles with 0–3[–4] coils, 0.5–16.5 × 0.5 mm.
Flowers

pistils 4–8.
Fruits

1.8–2 × 0.7–1.5 mm;

gynophore 1.2–1.9 cm;

beak terminal, slightly recurved, 0.6–1 mm.
2n

= 16.

Ruppia maritima
Phenology Flowering spring–fall.
Habitat Shallow waters of brackish streams, ditches, and lakes along ocean shore
Elevation 0–200 m (0–700 ft)
Distribution
from FNA
AK; AL; CA; CT; DE; FL; GA; LA; MA; MD; ME; MS; NC; NH; NJ; NY; OR; RI; SC; TX; VA; WA; BC; NB; NF; NS; ON; PE; QC; SK; SPM; Central America; South America; coastal Mexico; West Indies; Bermuda; Eurasia; Africa; Australia
[WildflowerSearch map]
[BONAP county map]
Discussion

No specimens have been seen from Washington, D. C., but the species is to be expected there.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 22.
Parent taxa Ruppiaceae > Ruppia
Sibling taxa
R. cirrhosa
Synonyms R. maritima var. brevirostris, R. maritima var. exigua, R. maritima, R. maritima var. longipes, R. maritima var. obliqua, R. maritima var. rostrata, R. maritima var. subcapitata
Name authority Linnaeus: Sp. Pl. 1: 127. (1753)
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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