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widgeonweeds
Ruppia
Ruppia, also known as the widgeonweeds, ditch grasses or widgeon grass, is the only genus in the family Ruppiaceae with eight known species). These are aquatic plants widespread over much of the world. The genus name was given in honour of Heinrich Bernhard Rupp, a German botanist (1688-1719). They are widespread outside of frigid zones and the tropics.
11 branches of this genus, most-observed first
widgeongrass
speciesRuppia maritima
Spiral Tasselweed
speciesRuppia cirrhosa
Ruppia polycarpa
speciesRuppia polycarpa
Tasselweed
speciesRuppia filifolia
large-fruit seatassel
speciesRuppia megacarpa
Ruppia drepanensis
speciesRuppia drepanensis
Ruppia tuberosa
speciesRuppia tuberosa
Ruppia brevipedunculata
speciesRuppia brevipedunculata
Ruppia didyma
speciesRuppia didyma
Ruppia bicarpa
speciesRuppia bicarpa
Ruppia sinensis
speciesRuppia sinensis
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the old herbals & bestiaries
In the stacks
Searching the stacks…
Every page naming Ruppia in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 61092.