Ruppia cirrhosa
Ruppia cirrhosa is a species of aquatic plant known by the common names spiral ditchgrass[1] and spiral tasselweed.[2] It is native to the Americas and Europe, where it grows in freshwater bodies, such as lakes. It is a thread-thin, grasslike perennial herb which grows from a rhizome anchored in the wet substrate. It produces a long, narrow inflorescence tipped with two tiny flowers. As the fruit develops the peduncle of the inflorescence curls into a neat spiral.
| 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 (Petagna) Grande | |
Taxonomy and nomenclature
A lectotype for this name is designated and the name is shown to be a homotypic synonym of R. maritima.[3] Consequently, R. spiralis has nomenclatural priority over R. cirrhosa for the long- and coiled-pedunculate Ruppia.
gollark: Natural language processing is also a different and highly ææææææææ problem.
gollark: Voice recognition and object manipulation are pretty different problems.
gollark: A what?
gollark: You should probably try a simpler step toward whatever your goals are *first*, to see if it's viable or not.
gollark: As far as I know stuff like detecting and tracking objects and generally converting the 2D input from eyes into a 3D worldspace thingy is quite hard, audio is mostly just fourier-transforming.
References
- "Ruppia cirrhosa". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 26 October 2015.
- "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17.
- Ito, Y., T. Ohi-Toma, C. Nepi, A. Santangelo, A. Stinca, N. Tanaka, & J. Murata (2017) Towards a better understanding of the Ruppia maritima complex (Ruppiaceae): Notes on the correct application and typification of the names R. cirrhosa and R. spiralis Taxon 66: 167-171
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