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Cladus: Eukaryota
Regnum: Plantae
Divisio: Magnoliophyta
Classis: Magnoliopsida
Ordo: Gentianales
Familia: Apocynaceae
Subfamilia: Periplocoideae
Tribus: Cryptolepideae
Genus: Cryptostegia
Species: C. grandiflora - C. madagascariensis


Cryptostegia R. Br., Bot. Reg.t. 435. 1819.


* Tropicos.org. Missouri Botanical Garden. 24 Feb 2009 [1].

Svenska: Gummirankesläktet

Cryptostegia is a genus of flowering plants in the dogbane family, Apocynaceae. It consists of three species of thin, many-stemmed, woody, perennial vines native to tropical Africa and Madagascar. The milky sap, that oozes from the stems or leaves, is extremely toxic to all livestock. It contains cardiac glycosides which causes sudden death after exercise. Though the sap is also some quality latex, there is no commercial use for its production. These evergreen plants are grown for their showy ornamental vines. They are vigorous, self-supporting, beautiful vines that could reach 15m in length. Leaves are ovate, glossy, dark green 6-10 cm long and 3-5 cm wide and in opposite pairs. Clusters of attractive, large, showy, funnel-shaped flowers with 5 white to rose-pink or reddish-purple petals bloom in summer after the wet season. Seed pods are rigid 10-12 cm long and 3-4 cm wide, and grow in pairs at the end of a short stalk with silky white floss. The plants are rampant growth and are invasive in some areas. In Australia, they are threatened as some of a most restricted weeds.

In cultivation, the plants prefer a hot climate.


Cryptostegia grandiflora R.Br. – Purple Allamanda, Rubber Vine
Cryptostegia madagascariensis Bojer ex Decne.[2]


^ "Genus: Cryptostegia R. Br.". Germplasm Resources Information Network. United States Department of Agriculture. 2007-09-17. Retrieved 2010-11-26.
^ "GRIN Species Records of Cryptostegia". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-11-26.

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Source: Wikipedia, Wikispecies: All text is available under the terms of the GNU Free Documentation License