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The root is said to be an aphrodisiac. All plant parts are highly toxic, due to the presence of cardioactive glycosides, in particular the ouabain, present in all parts of the plant, but mainly in the seeds, used in the past for poisoning the arrows thanks to the particularly fast lethal effect, by heart failure. (1920); Strophanthus chopraie M.R.Almeida (2001). Common names: climbing oleander, dart vine, poison arrow vine, rose allamanda, spider tresses (English); iné, onayé (Cameroonian); omaatwa (Akan); isa, isa-gidi (Nigerian); gondui, sawai, tsa-wa (Sierra Leonean). Family Name: Apocynaceae: Synonyms: Nerium guineense: Common Name: Cream Fruit, Climbing Oleander, Indian Rubber Vine, Strofantus Ungu Strophanthus gratus Franch. Common Name: Climbing Oleander Family: Apocynaceae Juss. (1888) is a woody evergreen sarmentose shrub or climber with stems up to about 18 m long and of 8-10 cm of diameter, of brown colour. It reproduces by seed in organic loam with addition of sand for a 30% maintained humid at the temperature of 22-24 °C, and by semi-woody cutting. Native to | West and West Central Africa. ex Perrot & Vogt (1913); Strophanthus perrotii A.Chev. © MONACO NATURE ENCYCLOPEDIA | All rights reserved. It is naturalized in Taiwan and also Trinidad and Tobago. 100 John F. Kennedy Drive San Francisco, CA 94118 415-831-2090, About Us Visit Exhibits & Events Press Resources, Education Your Event In the News Support Us, © 2019 Conservatory of Flowers All Rights Reserved |, San Francisco Recreation and Parks Department. Overview Information Strophanthus is an herb. The fruits are cylindrical, opposite follicles, 20-40 cm long and of 3-4 cm of diameter, containing 2 cm long fusiform seeds equipped with a 1-5 cm long tuft of hairs at the extremity, which favours their dispersion by means of the wind. Strophanthus stanleyanus Hook. It requires full sun or slight shade and draining soils rich of organic substance, from slightly acidic to slightly alkaline, may be grown as bush, with proper prunings, or leaning against railings and trellises. The Strophanthus gratus (Wall. More recent studies have found a novel use that can prove relevant for metastatic prostate cancer. It is rumored that a sufficiently concentrated ouabain dart can bring down a Hippopotamus, probably as the result of respiratory or cardiac arrest. [1], Strophanthus gratus has been used in local traditional medicine: ouabain derived from the plant's seeds is used as a treatment for heart failure. Ouabain is the main glycoside found in the seed, it is odorless but very bitter and extremely toxic. Common Name: Climbing Oleander. This plant is still poisonous and can cause nausea, vomiting, and heart problems if not used properly. (1893); Nerium guineense Brongn. Particularly ornamental species due to its luxuriant foliage and the delicate coloured, fleshy flowers having the porcelain shine, which emit a pleasant scent recalling the roses’ one, cultivable in the tropical and subtropical climate zones where temperatures of less than +10 °C are exceptional events and of short duration. Family Name | Apocynaceae. Flowering plant growing in Rama IX Royal Park, Bangkok [2], World Checklist of Selected Plant Families, https://en.wikipedia.org/w/index.php?title=Strophanthus_gratus&oldid=967384812, Creative Commons Attribution-ShareAlike License, This page was last edited on 12 July 2020, at 23:39. Despite its beautiful rose scent, the winter-spring blooming Strophanthus gratus is not as friendly as it appears. Strophanthus ouaboio Holmes. The leaves are used to treat gonorrhea and constipation, as well as applied externally to treat snakebites and to cure fever. Strophanthus gratus is a plant in the dogbane family Apocynaceae. Nice but toxic, Strophanthus gratus reaches 18 m with woody climbing stems © Giuseppe Mazza. Most notably the seeds contain the highest concentration of glycosides which can be extracted and used as a rapid cardiac stimulant. The strophanthins from different species were found to vary somewhat in chemical composition, and Thoms proposes to name them as follows: k-strophanthin when obtained from S. Kombé, g-strophanthin when obtained from S. gratus, e-strophanthin when obtained from S. Emini, h-strophanthin when obtained from S. hispidus. Elsewhere, it can be cultivated in pot, using a particularly draining and aerated organic substratum, for being sheltered during the coldest months in very luminous locations, with day temperatures of 20-24 °C and lowest night ones not under the 15 °C. Regular waterings in summer, more spaced in winter, allowing the substratum to partially dry up before giving water again, and fertilizations from spring to autumn preferably with balanced hydrosoluble products with microelements at half of the dosage suggested on the package. [2], Strophanthus gratus is native to tropical Africa: from Senegal in the west, east and south to the Democratic Republic of the Congo. Strophanthus seeds are used to make medicine. Common Name | Climbing Oleander. The plant contains high concentration of cardiac glycosides, which are organic compounds that increase the output force of the heart. Its fragrant flowers feature a white corolla, topped by red or purple colour, with pink corona lobes. Extracts containing ouabain have long been used by Somali tribesmen and other groups to poison hunting arrows. Despite its beautiful rose scent, the winter-spring blooming Strophanthus gratus is not as friendly as it appears. & Hook.) Strophanthus gratus is a woody liana that can grow up to 25 metres (80 ft), with a trunk diameter of up to 10 centimetres (4 in). It has also been used as arrow poison. Common names: climbing oleander, dart vine, poison arrow vine, rose allamanda, spider tresses (English); iné, onayé (Cameroonian); omaatwa (Akan); isa, isa-gidi (Nigerian); gondui, sawai, tsa-wa (Sierra Leonean). Baill. → To appreciate the biodiversity within the APOCYNACEAE family please click here. & Hook.) The leaves, on short petiole, 0,5-1 cm, are simple, opposite, coriaceous, obovate to elliptic-ovate with pointed apex and entire margin, 5-15 cm long and 2-8 cm broad, of intense green colour and glossy. Synonyms: Roupellia grata Wall. The plant contains high concentration of cardiac glycosides, which are organic compounds that increase the output force of the heart. The Strophanthus gratus (Wall. & Hook.) Inflorescences in sessile terminal cymes carrying 3-10 hermaphroditic flowers, on a 0,5-1,2 cm long pedicel, of about 5 cm of diameter, with 5 obovate sepals, 0,8-1,8 cm long, of reddish brown colour, funnel-shaped corolla of white colour suffused of pink with 2,5-4,5 cm long tube and 5 obovate lobes with ruffled margin, 1,5-3,5 cm long and broad, throat with 10 pink lanceolate-linear lobes crown, 0,5-1,5 cm long. Flowering plant growing in Rama IX Royal Park, Bangkok Photograph by: Tony Rodd. Strophanthus gratus (Wall.& Hook.)Baill. Strophanthus perrotii A.Chev. (1849); Strophanthus stanleyanus Hook (1849); Roupalia grata (Wall. It has been used as an arrow poison in Africa. & Hook. The name of the genus is the combination of the Greek substantives “στροφος” (strophos) = cord and “ἄνθος” = flower, with reference to the long extremities of the twisted petals, in particular when still in bud, of some species belonging to the genus; the name of the species is the Latin adjective “gratus, a, um” = appreciated, pleasant, with obvious reference. Strophanthus gratus. T.Moore & Ayres (1850); Strophanthus ouaboio Holmes (1890); Strophanthus glaber Cornu ex Holmes (1893); Strophanthus gratus Franch. Strophanthus gratus is a plant in the dogbane family Apocynaceae. Strophanthus gratus.

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