Ruppiaceae
Widgeongrass
Ruppia maritima
- Family
- Ruppiaceae
- Genus
- Ruppia
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Common names
By language (25)
- arz
- روبيا ماريتيما
- Bulgarian
- Морска рупия
- Catalan
- Llapó de mar, Ruppie maritime
- Chinese
- 川蔓藻, 流蘇菜, 川蔓草
- Czech
- Táhlice přímořská
- Dutch
- Snavelruppia
- English
- Widgeongrass, Beaked tasselweed, Ditch-grass, Ditchgrass, Species code: Rm, Ditch grass, Tassel pondweed, Widgeon grass
- Estonian
- Harilik heinmuda
- Finnish
- Merihapsikka
- French
- Ruppie maritime, Rupelle Maritime
- German
- Meeres-Salde, Strandsalde, Ruppie maritime, Strand-Salde
- Hebrew
- רופיית הים
- hsb
- Mórska słonjel
- Icelandic
- Lónajurt
- Japanese
- カワツルモ
- Lithuanian
- Ruppie maritime
- Norwegian Bokmål
- Småhavgras
- Norwegian Nynorsk
- Småhavgras
- Polish
- Rupia morska
- Russian
- Руппия морская
- Swedish
- Hårnating, Hårnate, Ruppie maritime
- Thai
- หญ้าตะกานน้ำเค็ม
- Tongan
- Limuvai
- Ukrainian
- Рупія морська
- Welsh
- Tusw arfor
Synonyms
- Buccaferrea maritima (L.) Lunell
- Ruppia andina Phil.
- Ruppia brachypus J.Gay
- Ruppia brachypus subsp. bahusiensis Lindstr.
- Ruppia brevipes Bertol. ex Griseb.
- Ruppia cirrhosa subsp. longipes (Hagstr.) Á.Löve
- Ruppia curvicarpa A.Nelson
- Ruppia intermedia C.G.H.Thed.
- Ruppia intermedia Thed.
- Ruppia marina Fr.
- Ruppia maritima f. aculeata Hagstr.
- Ruppia maritima f. brevirostris C.Agardh
- Ruppia maritima f. curvirorstris H.St.John & Fosberg
- Ruppia maritima f. pectinata Hagstr.
- Ruppia maritima prol. brachypus (J.Gay) Rouy
- Ruppia maritima prol. brevirostris
- Ruppia maritima prol. curvicarpa (A.Nelson) Graebn.
- Ruppia maritima subsp. brachypus (J.Gay) Schlegel
- Ruppia maritima subsp. brachypus Á.Löve
- Ruppia maritima subsp. brachypus (J.Gay) Bonnier & Layens
- Ruppia maritima subsp. brevirostris C.Agardh
- Ruppia maritima subsp. intermedia (C.G.H.Thed.) Piper & Beattie
- Ruppia maritima subsp. obliqua (Griseb. & Schenk) Á.Löve & D.Löve
- Ruppia maritima subsp. rostellata (W.D.J.Koch ex Rchb.) Asch. & Graebn.
- Ruppia maritima subsp. rostrata (C.Agardh) Piper & Beattie
- Ruppia maritima var. brachypus (J.Gay) K.Schum.
- Ruppia maritima var. brachypus (Gay.) Garcke
- Ruppia maritima var. brevirostris (C.Agardh) Asch. & Graebn.
- Ruppia maritima var. brevirostris C.Agardh
- Ruppia maritima var. curvicarpa (A.Nelson) Fernald & Wiegand
- Ruppia maritima var. exigua Fernald & Wiegand
- Ruppia maritima var. floridana Graebn.
- Ruppia maritima var. intermedia (C.G.H.Thed.) Asch. & Graebn.
- Ruppia maritima var. japonica H.Hara
- Ruppia maritima var. longipes Hagstr.
- Ruppia maritima var. maritima
- Ruppia maritima var. minor Mert. & W.D.J.Koch
- Ruppia maritima var. obliqua (Griseb. & Schenk) Asch. & Graebn.
- Ruppia maritima var. onondagensis Fernald & Wiegand
- Ruppia maritima var. pacifica H.St.John & Fosberg
and 18 more.
Flowers
- In flower
- February to April, June to September (from 21 flowering iNaturalist observations worldwide)
- Flower colour
- green (USDA PLANTS Database)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Alaska: native, Canada: native, Hawaii: native, Lower 48 states: native, Puerto Rico: native, St. Pierre and Miquelon: native, U.S. Virgin Islands: native
Photos
FlowerPhoto: Anne Parker, CC BY 4.0, from iNaturalist 
FlowerPhoto: S.MORE, CC0, from iNaturalist 
FlowerPhoto: Cheng-Tao Lin, CC BY 4.0, from iNaturalist 
FlowerPhoto: 葉子, CC0, from iNaturalist 
Photo: Stefan.lefnaer, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Daniel Martín, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Étienne Léveillé-Bourret, CC BY 4.0, from iNaturalist 
Photo: Stefan.lefnaer, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Peter V, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Daniel Atha, CC0, from iNaturalist 
Photo: Stefan.lefnaer, CC BY-SA 4.0, from Wikimedia Commons 
Photo: KP Laer, CC BY-SA 4.0, from Pl@ntNet via GBIF
More in Ruppia
- Spiral ditchgrassRuppia cirrhosaRuppiaceae
- Species code: RpRuppia polycarpaRuppiaceae
- Large-fruit seatasselRuppia megacarpaRuppiaceae
- Species code: RtRuppia tuberosaRuppiaceae
- Ruppia drepanensisRuppiaceae
- Ruppia didymaRuppiaceae
- Ruppia filifoliaRuppiaceae
- Ruppia bicarpaRuppiaceae
- Ruppia brevipedunculataRuppiaceae
- Ruppia sinensisRuppiaceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.