Monographs Details: Mandevilla turgida Woodson
Authority: Maguire, Bassett & Wurdack, John J. 1958. The botany of the Guayana Highland--Part III. Mem. New York Bot. Gard. 10: 1-156.
Family:Apocynaceae
Description:Distribution and Ecology - VENEZUELA: Amazonas: Maguire, Cowan & IVurdack 30675, Cerro Yapaeana, Rio Orinoco, occasional, cumbre, 1200 m alt., Jan 3, 1951, woody vine, flowers yellow with corollatube base and outside orange. Cowan & Wurdacl 3106S, Serrania Paru, Eio Paru, Cano Asisa, Rio Ventuari, infrequent, west rim in cumbre, sabanita just north of head of valley of Camp Cano, sabanita and scrub forest, 2000 m alt., Feb 2, 1951, unbranched shrub 0.2-1 m tall, corolla yellow with outside of tube bronze. Bolivar: Maguire 32762, Cerro Guaiquinima, Bio Paragua, frequent, rocky elevation, Cumbre Camp, 2000 m alt., Dec 25, 1951, subshrub to 7 dm high, flowers yellow. Maguire 32949, Cerro Guaiquinima, Rio Paragua, frequent in thickets and open savanna, North Valley, 1600-1700 m alt., Jan 4, 1952, shrub or scandent vine, 5-10 dm high, flowers yellow.

Discussion:The collections from the type locality, 32949 and 32762, were compared with the type (flowers poor) at USXH. The leaves vary from elliptic to obovate, from typically acutish at the apex to rounded. The proper tube (infrastaminal quinima collections. The tube proper is about 2 cm long, the throat 1.7 cm long, The ovary is sparsely hairy. The collection 31144 is a large-flowered form. The corolla is larger than described for the species or those of the Maguire Guaiquinima collections. The tube proper is about 2 cm long, the throat 1.7 cm long, the corolla-lobes 1.5 cm. The collection from Yapaeana, 30675, differs somewhat from the typical form; stem not as densely pubescent; leaf-blades obovate, acutish at the base and running into the petiole; sepals smaller and blunter, 1 mm long, rounded to obtuse at the apex; ovary puberulent. The leaves of 31068 are sometimes ternate.
Distribution:Venezuela South America|