| Ruppia cirrhosa | |
|---|---|
 | |
Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Alismatales |
| Family: | Ruppiaceae |
| Genus: | Ruppia |
| Species: | R. cirrhosa |
| Binomial name | |
| Ruppia cirrhosa | |
Ruppia cirrhosa is a species ofaquatic plant known by the common namesspiral ditchgrass[2] andspiral tasselweed.[3] It is native to north Africa, South Africa and parts of Europe,[1] where it grows infreshwater bodies, such as lakes. It is a thread-thin, grasslike perennial herb which grows from arhizome anchored in the wet substrate. It produces a long, narrowinflorescence tipped with two tiny flowers. As the fruit develops thepeduncle of the inflorescence curls into a neat spiral.[citation needed]
Alectotype for this name is designated and the name is shown to be ahomotypic synonym ofR. maritima.[4] Consequently,R. spiralis has nomenclatural priority overR. cirrhosa for the long- and coiled-pedunculateRuppia.
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