Halleorchis aspidogynoides

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Halleorchis aspidogynoides
Systematics
Family : Orchids (orchidaceae)
Subfamily : Orchidoideae
Tribe : Cranichideae
Sub tribus : Goodyerinae
Genre : Hall orchids
Type : Halleorchis aspidogynoides
Scientific name of the  genus
Hall orchids
Szlach. & Olszewski
Scientific name of the  species
Halleorchis aspidogynoides
Szlach. & Olszewski

The Halleorchis aspidogynoides orchid is the only species in the Halleorchis genus . The small, herbaceous plants come from tropical West Africa.

description

Halleorchis aspidogynoides has a creeping rhizome with a few to many internodes . The above-ground rungs are covered with a few leaves that are crowded in the lower area of ​​the rungs. The leaf blade narrows at the base to a petiole that surrounds the stem in a tubular shape.

The terminal inflorescence is unbranched and contains numerous flowers ; there are several bracts on the peduncle . Inflorescence axis, bracts, bracts and ovary are hairy glandular. The small flowers are resupinated , their color is pink. The three outer petals ( sepals ) are not grown together. They are similar to one another: the dorsal sepal is oval to lanceolate in shape and curved in a hood shape, the lateral sepals, however, have an asymmetrical, slightly widened base that partially covers the lower part of the lip ( labellum ). The lateral inner petals ( petals ) are obliquely spatulate, the edge of which they adhere to the upper sepal. The lip is divided into two parts: the basal part is bowl-shaped with outwardly bent edges. It has no appendages inside. The front part is rhombic, at the top the edges are turned up. At the narrow transition from the basal to the anterior part of the lip there are two longitudinal lamellae. The lower third of the short column is fused with the edges of the lip. The scar consists of a contiguous, concave surface. The stamen is narrow oval to lanceolate in outline. It contains two club-shaped pollinia , each connected to the common, narrow-oval adhesive disc ( Viscidium ) via a short stalk . The dividing tissue between stigma and stamen ( rostellum ) is elongated triangular and deeply split into two.

distribution

Halleorchis aspidogynoides is native to West Africa in the countries of Cameroon and Gabon . The plants were found at altitudes of 850 to 950 meters in the shade of evergreen rainforests. They grow in damp places, at the foot of rocks.

Systematics and botanical history

The species was first described in 1998 by Dariusz Szlachetko and Tomasz Olszewski . At the same time as describing the new species, a separate genus, the hall orchid , was set up. The genus name honors the French botanist Nicolas Hallé . The name aspidogynoides refers to similarities to the genus Aspidogyne . The genus Goodyera is probably closely related to hall orchids .

See also

Individual evidence

  1. ↑ a b c d Alec M. Pridgeon, Phillip Cribb, Mark W. Chase, Finn Rasmussen (eds.): Genera Orchidacearum. tape 3 : Orchidoideae , Part 2: Vanilloideae . Oxford University Press, New York / Oxford 2003, ISBN 0-19-850711-9 , pp. 98-100 .
  2. ↑ Rafaël Govaerts (ed.): Halleorchis aspidogynoides. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew .

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