Biology:Egeria (plant)
| Egeria | |
|---|---|
| |
| Egeria densa foliage | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Alismatales |
| Family: | Hydrocharitaceae |
| Subfamily: | Anacharioideae |
| Genus: | Egeria Planch. |
| Type species | |
| Egeria densa | |
| Species | |
|
See text | |
Egeria is a genus of three species of aquatic plants in the family Hydrocharitaceae described as a genus in 1849.[3][2] native to warm-temperate South America.[4]
Ecology
Egeria is found in many temperate and subtropical regions throughout the world as an introduced, or "alien", species, meaning a species that does not originate from the area in which it is found. In many places, particularly in Europe, fast-growing, adaptable plants such as Egeria can spread quickly and cause major damage to native plants and wildlife.[5]
Taxonomy
The genus was formerly included in the related genus Elodea, from which it differs in having the leaves in whorls of four or more, not three, and in having more conspicuous flowers with larger (particularly broader) petals.[6][7]
Species
The genus includes the following species:[4]
- Egeria densa Planch. – S + SE Brazil, NE Argentina, Paraguay, Uruguay; naturalized in scattered locales in Europe, Africa, China, New Zealand, Hawaii, USA, Mesoamerica, West Indies
- Egeria heterostemon S.Koehler & C.P.Bove – Brazil
- Egeria najas Planch. – S + SE + E Brazil, NE Argentina, Paraguay, Uruguay
References
- ↑ lectotype designated by Oostroom & Reichgelt, Fl. Neerl. 1(6): 27 (1964)
- ↑ 2.0 2.1 "Tropicos | Name – !Egeria Planch.". http://www.tropicos.org/Name/40001455.
- ↑ Planchon, Jules Émile. 1849. Annales des Sciences Naturelles; Botanique, sér. 3 11: 79
- ↑ 4.0 4.1 "World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew" (in en-GB). http://apps.kew.org/wcsp/namedetail.do?name_id=309438.
- ↑ Hisock, Peter. (2005). Aquarium Plants (Mini Encyclopedia), p. 146. NY: Barrons. ISBN:0-7641-2989-9.
- ↑ Flora of North America: Egeria
- ↑ Huxley, A., ed. (1992). New RHS Dictionary of Gardening. Macmillan ISBN:0-333-47494-5.
Wikidata ☰ Q164297 entry
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