Biology:Dracaena angolensis
| Dracaena angolensis | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Asparagaceae |
| Subfamily: | Nolinoideae |
| Genus: | Dracaena |
| Species: | D. angolensis
|
| Binomial name | |
| Dracaena angolensis (Welw. ex Carrière) Byng & Christenh.[1]
| |
| Synonyms[1][2] | |
| |
Dracaena angolensis, synonym Sansevieria cylindrica,[1] also known as the cylindrical snake plant, African spear or spear sansevieria or in Brazil Saint Bárbara sword,[3] is a succulent plant native to Angola.
Description
Dracaena angolensis has striped, elongate, smooth, greenish-gray subcylindrical leaves. They are up to 3 cm (1 in) diameter and grow up to 2 m (7 ft) above soil.[3] The spear sansevieria grows fan-shaped, with its stiff leaves growing from a basal rosette.
The species is interesting in having subcylindrical instead of strap-shaped leaves caused by a failure to express genes which would cause the cylindrical bud to differentiate dorsoventrally or produce a distinctive and familiar top and bottom surface to the leaf blade.[3][4] The 3 cm (1 in) greenish-white tubular flowers are tinged with pink.[4]
Cultivation
The species is drought-tolerant and in cultivation requires water only about once every other week during the growing season.[4] The species can be watered once a month during the winter months. The species was described by Wenceslas Bojer in 1837. Dracaena angolensis (under the synonym Sansevieria cylindrica) received its common name from a competition in a Dutch national newspaper.[3] It is popular as an ornamental plant[3] as it is easy to culture and take care of in a home if given bright sunlight and other required resources.[4]
Gallery of varieties and cultivars
Kind known as "var. patula"
Cultivar 'Boncel'
References
- ↑ 1.0 1.1 1.2 "Dracaena angolensis (Welw. ex Carrière) Byng & Christenh.". Plants of the World Online. Royal Botanic Gardens, Kew. http://www.plantsoftheworldonline.org/taxon/urn:lsid:ipni.org:names:77182375-1. Retrieved 2020-02-21.
- ↑ "Sansevieria angolensis Welw.". The International Plant Names Index. https://www.ipni.org/n/429834-1. Retrieved 2020-02-21.
- ↑ 3.0 3.1 3.2 3.3 3.4 Thongthiraj, Rahpee. "Get Inspired with Sansevierias: The Perfect Solution for Your Home Garden". California Cactus Center. Archived from the original on 2017-07-02. https://web.archive.org/web/20170702170642/http://www.cactuscenter.com/get-inspired-with-sansevierias/. Retrieved 2017-07-02.
- ↑ 4.0 4.1 4.2 4.3 Lemke, Cal (2002-01-25). "Sanseviera cylindrica". Plant of the Week. University of Oklahoma Department of Biology and Microbiology. http://www.plantoftheweek.org/week160.shtml. Retrieved 2008-04-02.
External links
Wikidata ☰ {{{from}}} entry
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