Vanilla heterolopha
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Vanilla heterolopha is a species of plant in the genus Vanilla ( Vanilla ) in the orchid family (Orchidaceae). It grows as a climbing plant in tropical West Africa.
description
Vanilla heterolopha is a small, evergreen climber, the shoot reaches 70 centimeters in length and 0.2 centimeters in diameter. The leaves are lanceolate, wedge-shaped to rounded at the base and provided with a 0.5 to one centimeter long petiole, ending with a long extension at the front. They are five to 12 inches long and 1.3 to 2.7 inches wide.
The flowering period of Vanilla heterolopha is from October to December. The inflorescence is unbranched, it is one to three centimeters long and has numerous pink flowers . The bracts are 0.4 inches long and are so close that they overlap. Pedicel and ovary together measure one to two centimeters. The dorsal sepal is lanceolate, 1.7 to 2.2 centimeters long by 0.5 centimeters wide, the lateral sepals are shorter and wider (1.7 × 0.8 centimeters). The petals are lanceolate and measure 1.6 to two inches long and 0.5 inches wide. The lip is about 1.3 centimeters long, three-lobed, the side lobes turned up and grown together with the edges of the column . The middle lobe ends bluntly, the front edge is slightly wavy. On the lip there are three rows of differently shaped appendages next to each other.
distribution
Vanilla heterolopha occurs in tropical West Africa in the Congo and Gabon . The locations are in moist forests, where the plants occur in clear places.
Systematics and botanical history
Vanilla heterolopha was first described by Summerhayes in 1938 .
Within the genus Vanilla , Vanilla heterolopha is classified in the subgenus Xanata and there in the section Tethya , which contains all species of the Paleotropic . According to Portères , it is vegetatively similar to Vanilla africana , but has a different structure of the lip. In addition to Vanilla africana, Soto Arenas and Cribb name the following species as relatives: Vanilla acuminata , Vanilla crenulata , Vanilla cucullata , Vanilla hallei , Vanilla ramosa and Vanilla zanzibarica .
literature
- Le Vanillier et la Vanille dans le Monde . In: Gilbert Bouriquet (ed.): Encyclopédie Biologique . tape XLVI . Paul Lechevalier, Paris 1954.
Individual evidence
- ↑ a b c d Roland Portères: Le Genre Vanilla et ses Espèces. In: Le Vanillier et la Vanille dans le Monde. Pp. 206-207.
- ↑ Rafaël Govaerts (ed.): Vanilla heterolopha. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved May 19, 2020.
- ↑ In: Kew Bull. 1938, p. 149.
- ↑ a b Miguel A. Soto Arenas, Phillip Cribb: A new infrageneric classification and synopsis of the genus Vanilla Plum. ex Mill. (Orchidaceae: Vanillinae) . In: Lankesteriana . tape 9 , no. 3 , 2010, p. 379-380 ( ucr.ac.cr [PDF; 692 kB ]).