A Checklist of the Vascular Plants of Washington State
Hosted by the University of Washington Herbarium, Burke Museum
Hosted by the University of Washington Herbarium, Burke Museum
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Ruppiaceae » Ruppia maritima
Last updated 5/1/2023 by David Giblin.
Ruppia maritima L.[FNA22, HC, HC2]
beaked ditch-grass, spiral ditch-grass, western ditch-grass
Publication: Sp. Pl. 1: 127. 1753.
Origin: Native
selected vouchers: WTU
Notes: Recent phylogenetic study (Ito et al., 2010) suggests recognition of R. cirrhosa renders R. maritima paraphyletic. Moreover, the primary character used to separate these species is the number of coils in the peduncle, which likely is a plastic trait.
References:
» Sytsma et al. 2002 Amer. J. Bot. 89:1531–1546.
Synonyms & Misapplied Names:
Ruppia cirrhosa (Petagna) Grande[FNA22]
Ruppia maritima L. var. obliqua (Schur) Asch. & Graebn.[Peck]
Ruppia maritima L. var. rostrata Agardh[Peck]
Ruppia occidentalis S. Watson[Abrams]
