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'''''Sansevieria''''', whose common names include: [[mother-in-law's tongue]], devil's tongue, [[jinn]]'s tongue, and [[snake plant]], is a genus of about 70 species of [[flowering plant]]s in the family [[Ruscaceae]], native to tropical and subtropical regions of the [[Old World]].<ref>{{cite book | last = Mbugua | first = P. K. | coauthors = D. M. Moore | editor = L. J. G. van der Maesen, M. van der Burgt, J. M. van Medenbach de Rooy, editors| title = The Biodiversity of African Plants | origdate = 1996-6-30 | format = hardcover | edition = 1st | chapter = Taxonomic studies of the genus Sansevieria (Dracaenaceae) | page = 880}}</ref> They are [[xerophyte|xerophytic]] [[herbaceous]] to [[shrub]]by [[succulent plant|succulent]] [[perennial plant]]s with [[evergreen]] strap-shaped [[leaf|leaves]], growing to 20 cm to 3 m tall, often forming dense clumps from a spreading [[rhizome]] or [[stolon]]s. The [[flower]]s are greenish-white, produced on a simple or branched [[raceme]] 40–90 cm long. The [[fruit]] is a red or orange [[berry]]. Several species are popular [[houseplant]]s in temperate regions, with [[Sansevieria trifasciata]] the most widely sold; numerous [[cultivar]]s are available. The Chinese usually keep this plant potted in a pot often ornated with dragons and phoenixes<ref>http://www.about-garden.com/a/en/1919-sansevieria-trifasciata-snake-plant </ref>. Growth is comparatively slow and the plant will last for many years. The tall-growing plants have stiff, erect, lance-shaped leaves while the dwarf plants grow in rosettes. As houseplants, Sansevieria thrive on warmth and bright light, but will also tolerate shade. Sansevieria can rot from over-watering, so it is important that they are potted in well-drained soil, and not over-watered. Another beautiful species is [[Sansevieria cylindrica]] which has leaves which look quite different from the "traditional" Sansevieria genus, but equally tough. '''Air Purification'''<br /> Like the [[Epipremnum aureum]] (Golden Pothos) and [[Dracaena fragrans]] (corn plant), Sansevieria is believed to act as good air purifiers by removing toxins (such as formaldehyde, xylene and toluene<ref>http://www.plantcare.com/encyclopedia/variegated-snake-plant-1138.aspx</ref>) from the air, thereby gaining a reputation as a good cure for the "Sick Building Syndrome"<ref>http://www.about-garden.com/a/en/1919-sansevieria-trifasciata-snake-plant</ref><ref>http://www.zone10.com/nasa-study-house-plants-clean-air.html</ref><ref>http://news.softpedia.com/news/Top-15-NASA-039-s-Plants-That-Can-Save-Your-Life-78345.shtml</ref>. Some reports seem to suggest that Sansevieria produces oxygen at night which makes it suitable as a plant to be placed in the bedroom<ref>http://www.bangkokpost.com/life/family/25863/clearing-the-air</ref>. {{Inc| Sansevieria (after Raimond de Sangro, Prince of Sanseviero, born at Naples 1710. The spelling Sanseviera is not the earliest). Liliaceae. Bowstring Hemp. Herbaceous perennials, essentially tender foliage plants, although beautiful in flower, adapted to the coolhouse. They are grown for the stiff erect lvs., which are usually variegated. Rhizome short, thick, sometimes stoloniferous: lvs. in a basal rosette, thick cartilaginous, frequently elongated, rather flat or terete: scape simple, tall, stout: fls. greenish white, medium-sized or long, clustered in an often dense raceme; perianth-tube slender, sometimes very long; stamens 6; ovary free, 3-celled.—Trop. and S. Afr. and India; the most recent treatment is by N. E. Brown in Kew Bulletin, 1915, where 54 species are described. The genus is important in yielding fiber. Sansevierias are easily propagated by division or they may be raised from leaf-cuttings about 3 inches long. These cuttings form roots in sandy soil after about one month, after which a long stolon-like bud is formed, which produces the new plant at some distance from the cutting. Sansevierias are well adapted to house decoration, since they do not require much sunlight. A rather heavy soil suits them best. The following species have been grown in various botanical gardens but are not known to be in general cult. unless otherwise specified. S. aethiopica, Thunb. Succulent, stemless subshrub: lvs. somewhat rosulate, suberect or erect-spreading, 5-16 in. long, thick, linear-lanceolate, acute, running out into white awl-like tips 2-3 in. long, concave-channeled, back strongly convex, sometimes transversely dark green-banded, margins red or white, somewhat glaucous: infl. 16-30 in. long; fls. white. S. Afr. B.M. 8487.—S. arborescens, Cornu, has sts. reaching a height of 4 ft., furnished entirely with short spreading lvs. E. Trop. Afr.—S. conspicua, N. E. Br., is a stemless herb: lvs. 3-5, lanceolate, 9-24 in. long, green on both surfaces, with dark lines above and rusty brown margins: fls. white, E. Trop. Afr.—S. Cornui, Ger. & Labr., is stemless, the lvs. not bordered and only a little striped at the base and on the outside. Senegambia; properly S. senegambica, Baker.—S. Craigii, Hort., is offered in the American trade as a form with variegated lvs.—S. fasciata, Cornu, is stemless: lvs. flat, leathery, 2 1/2 ft. long, 5 in. broad in the middle, bright green, striped and bordered with brown. Congo.—S. glauca, Hort., not Haw., resembles S. zeylanica, but the lvs. are somewhat shorter and not striate. Cochin-China.—S. grandis, Hook. f. Stemless: lvs. few, rosulate, obovate-oblong, the largest 3-4 ft. long, 6 in. broad, dull green with broad bands of much darker green: scape 2 ft. high, bearing a densely fld. terminal spike-like panicle 2-3 ft. long: fls. pure white, about 2 in. across. Trop. Afr. B.M. 7877. It produces a very strong, silky fiber.—S. intermedia, N. E. Br., is very similar to S. cylindrica, but the lvs. are channeled, the edges of the channel being acute below and obtusely rounded above. E. Trop. Afr.—S. liberica, Ger. & Labr. Lvs. more than 3 ft. long, bordered with ivory-white, not striped. W. Trop. Afr.—S. metallica, Ger. & Labr., is closely allied to what is called S. guineensis having shorter and somewhat broader lvs., which have a metallic tint and fewer markings.—S. rorida, N. E. Br. (Sanseverina rorida, Lanza), is almost stemless: lvs. 2-ranked, erect-spreading, horn-shaped, terete beneath, deeply channeled above: scape flexuous, longer than the lvs.: panicle elongated with many short reflexed branches: fls. small. Italian Somaliland.—S. Stuckyi, Godefr., is stemless: lvs. quite cylindric except a small furrow on the upper surface. E. Afr.—S. zanzibarica, Ger. & Labr., is short-stemmed: lvs. in a distichous rosette, subterete, without furrows, very rigid, up to 5-6 ft. long. Zanzibar. {{SCH}} }} ==Cultivation== ===Propagation=== ===Pests and diseases=== ==Species== ''[[Sansevieria cylindrica]]''<br>''[[Sansevieria ehrenbergii]]'' <br> ''[[Sansevieria hyacinthoides]]'' <br> ''[[Sansevieria trifasciata]]'' ==Gallery== <gallery perrow=5> File:Sansevieria trifasciata and Ficus pumila 'Variegata' 2448px.jpg File:Starr 071024-8807 Sansevieria trifasciata.jpg File:Starr 080607-7083 Sansevieria trifasciata.jpg File:Sansevieria ehrenbergii 3.jpg File:Spear Sansevieria.jpg </gallery> ==References== <references/> *[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963 <!--- xxxxx *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381 --> <!--- xxxxx *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432 --> <!--- xxxxx *Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608 --> ==External links== *{{wplink}} {{stub}} __NOTOC__
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