Vanilla hostmannii

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Vanilla hostmannii
Systematics
Order : Asparagales (Asparagales)
Family : Orchids (orchidaceae)
Subfamily : Vanilloideae
Tribe : Vanilleae
Genre : Vanilla ( vanilla )
Type : Vanilla hostmannii
Scientific name
Vanilla hostmannii
Rolfe

Vanilla hostmannii is a species of plant in the genus Vanilla ( Vanilla ) in the orchid family (Orchidaceae). It grows as a climbing plant in tropical South America.

description

Vanilla hostmannii is an evergreen climber with a fleshy shoot. The leaves are lanceolate, with a very short petiole at the base and a short, rather blunt, pointed tip at the front. They are 14 to 23 inches long and 3.5 to seven inches wide.

The inflorescence axis is five to 7.5 inches long. The bracts are elongated, concave, about 0.4 to 0.7 inches tall. The flower stalk and ovary together become three centimeters long. Sepals and petals are 5.5 to seven centimeters long. The lip is elongated and unlobed, the front edge is not wavy and ends bluntly. The lip is slightly smaller than the rest of the petals (4.5 to five centimeters), hairy at the base, in the middle there is a tuft of hair directed backwards. The club-shaped column is three centimeters long.

distribution

Vanilla hostmannii occurs in northern South America ( French Guyana , Guyana , Suriname , Venezuela ) and in the Amazon basin (Brazil, Colombia). It is quite a common plant there. It blooms in November on the upper reaches of the Suriname River .

Systematics and botanical history

Vanilla hostmannii was first described by Robert Allen Rolfe in 1896 .

Within the genus Vanilla , Vanilla hostmannii is classified in the subgenus Xanata and there in the section Xanata , which only contains species of the Neotropics . According to Portères , it resembles the Brazilian vanilla gardneri . Soto Arenas and Cribb name this species as further relatives Vanilla cribbiana , Vanilla dressleri , Vanilla ruiziana and Vanilla weberbaueriana . The species Vanilla barrereana and Vanilla porteresiana , described in 1995, consider them to be synonyms .

literature

  • Le Vanillier et la Vanille dans le Monde . In: Gilbert Bouriquet (ed.): Encyclopédie Biologique . tape XLVI . Paul Lechevalier, Paris 1954.

Individual evidence

  1. ↑ a b c d Roland Portères: Le Genre Vanilla et ses Espèces. In: Le Vanillier et la Vanille dans le Monde. P. 193.
  2. ↑ Rafaël Govaerts (ed.): Vanilla hostmannii. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved May 19, 2020.
  3. ↑ a b c Miguel A. Soto Arenas, Phillip Cribb: A new infrageeric classification and synopsis of the genus Vanilla Plum. ex Mill. (Orchidaceae: Vanillinae) . In: Lankesteriana . tape 9 , no. 3 , 2010, p. 380 ( ucr.ac.cr [PDF; 692 kB ]).
  4. ↑ In: J. Linn. Soc., Bot. Volume 32, 1896, p. 462.