Porphyrostachys – Wikipedia

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Porphyrostachys is a genus from the family of orchids (Orchidaceae). It consists of only two types of herbaceous plants that are located in the Andes of South America.

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The two types of the genus Porphyrostachys are terrestrically growing herbaceous plants, they get up to 80 centimeters high. The roots that arise are fleshy, hairy and thickened in a spindle. The leaves are in a basic rosette, they are clearly stimulated. Their shape is oval, they are not available at the heyday.

The grossy inflorescence, which is densely with numerous flowers, is end -oriented. It is upright, hairless and wears translucent, paper -like blades. The bodies are about as long as the ovary or a little longer. The ovary is unpetite and at Porphyrostachys pilifera Charty in cross -section. The flowers are not resuped and strikingly reddish. The dorsal sepal is knocked down or twisted back. The side sepals are asymmetrical, bent back or bent back, grown together at the bottom and walk a bit down on the ovary. The petals are linish and spirally screwed in. The lip is somewhat deepened and mussel -shaped, abruptly narrowed at the base (nailed), there with the downcoming column base. Together with the side sepal, the base of the lip forms a tubular nectarium. The column is elongated and slim, fine to warty hairy, at the base far beyond the base on the ovary (column foot). The scar consists of two surfaces that are approximately in parallel and are approximated to each other under the Rostellum. The separation tissue between the dust sheet and scar (Rostellum) is short and rounded, it ends. The dust sheet is oval to lanceolate, it contains the leg -shaped pollinia. [first] [2]

As a flower visitor, Dressler suspects colibris due to the color and shape of the flowers. [3]

Porphyrostachys occurs in the Andes of South America in Ecuador and Peru. [4] Houses of 1600 to 3000 meters are populated. The locations are located at open, less shaded places in the grassland. [first]

The genus Porphyrostachys was described by Heinrich Gustav Reichenbach in 1854. The name is made of the Greek words πορφύρεος porphyreos , «Purpur”, UNDC stachys , “Ear”, together. It refers to the flower color. Type is Porphyrostachys pilifera , already before Reichenbach’s description of the new genre as Altensteinia pilifera known. [first] [4]

Porphyrostachys is classified within the cranichideae tribus in the subtribus cranichidinae. The genera are close to Aa as well as Myrosmodes . [5]

The following species are known: [4]

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  • Leslie A. Garay: 225 (1). Orchidaceae (Cypripedioideae, Orchidoideae and Neottioideae) . In: Gunnar Harling, Bench Sparre (hrsg.): Flora of Ecuador . Band 9 , 1978, ISSN  0347-8742 , S. 173 .
  • Alec M. Pridgeon, Phillip Cribb, Mark W. Chase, Finn Rasmussen (Hrsg.): Genera Orchidacearum. Orchidoideae (Part 2). Vanilloideae . Band 3 . Oxford University Press, New York/Oxford 2003, ISBN 0-19-850711-9.
  1. ↑ a b c Jeffrey Wood: Porphyrostachys . In: Categories Orchidacearum . Bd. 3, S. 47.
  2. ↑ Leslie Garay: Porphyrostachys . In: Flora of Ecuador . Bd. 9, S. 211.
  3. ↑ Robert L. Dressler: The orchids: natural history and classification . Harvard University Press, Cambridge, Massachusetts 1981.
  4. ↑ a b c d It is Rafaël Govaerts (HRSG): Porphyrostachys. In: World Checklist of Selected Plant Families (WCSP) – The Board of Trustees of the Royal Botanic Gardens, Kew , accessed on July 18, 2018.
  5. ↑ Gerardo A. Salazar, Lidia I. Cabrera, Santiago Madriñán, Mark W. Chase: Phylogenetic relationships of Cranichidinae and Prescottiinae (Orchidaceae, Cranichideae) inferred from plastid and nuclear DNA sequences . In: Annals of Botany . Band 104 , 2009, S. 403–416 , doi: 10.1093/aob/mcn257 .

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