Damasonium
Starfruit | |
---|---|
Damasonium californicum | |
Damasonium minus (fruit) | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Order: | Alismatales |
Family: | Alismataceae |
Genus: | Damasonium Mill. |
Species | |
See text |
Damasonium is a genus of six species of flowering plants in the family Alismataceae, commonly known as starfruit and by the older name thrumwort. The genus has a subcosmopolitan but very patchy distribution.[1][2][3][4]
They are aquatic perennial herbaceous plants growing in shallow water or mud beside ponds. The leaves are all basal, floating, or aerial in plants on pond margins. The flowers are hermaphrodite, in one to many whorls, in umbels, racemes or panicles; they have six stamens, and six to nine carpels arranged in a whorl, connate at the base, each with two to many ventral ovules; The styles are terminal. The fruit is a whorl of follicles; the follicles are laterally compressed, stellately radiating, with a more or less elongated apical beak.[3][4]
Taxonomy[]
The genus was first described by Philip Miller in 1754. No type species was designated.[2][5]
Species[]
As of May 2014, there are six accepted species:[6][7]
- Damasonium alisma Mill. (syn. D. stellatum Thuill.; D. polyspermum Cosson; D. constrictum Juz.). - Great Britain, France, Portugal, Spain, Italy, Greece, Russia, Ukraine, Moldova, Kazakhstan
- Coss. - Mediterranean Basin and India
- Damasonium californicum Torr. ex Benth. - western United States (Idaho, Oregon, Nevada, California, Montana, Washington state)[8]
- Juz. -Kazakhstan and Altay region of Siberia
- Damasonium minus (R. Br.) Buchenau (syn. D. australe Salisb.). Australia.
- Coss. - Spain, France, Portugal, Greece, Sicily, Algeria, Libya, Morocco
References[]
- ^ Germplasm Resources Information Network: Damasonium[permanent dead link]
- ^ Jump up to: a b "Damasonium". Australian Plant Name Index, IBIS database. Centre for Plant Biodiversity Research, Australian Government.
- ^ Jump up to: a b Flora of NW Europe: Damasonium[permanent dead link]
- ^ Jump up to: a b Flora of North America: Damasonium
- ^ Miller, P. (1754). The Gardeners Dictionary abridged (4 ed.). p. 435.
- ^ "World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew". apps.kew.org (in German). Retrieved 2017-01-26.
- ^ Altervista Flora Italiana, Mestolaccia stellata, Starfruit, Damasonium
- ^ Biota of North America Program Image
- Alismataceae
- Alismataceae genera
- Freshwater plants
- Flora of Europe
- Flora of Asia
- Flora of North Africa
- Flora of Australia
- Flora of California
- Taxa named by Philip Miller