Kreodanthus

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Kreodanthus
Kreodanthus elatus, herbarium evidence

Kreodanthus elatus , herbarium evidence

Systematics
Order : Asparagales (Asparagales)
Family : Orchids (orchidaceae)
Subfamily : Orchidoideae
Tribe : Cranichideae
Sub tribus : Goodyerinae
Genre : Kreodanthus
Scientific name
Kreodanthus
Garay

Kreodanthus is a genus from the family of the orchid (Orchidaceae). It is made up of 13 types of herbaceous plants that are native to tropical America.

description

The species of the genus Kreodanthus form a creeping rhizome that is rooted at the nodes . On the rising rungs, the leaves are spaced apart, the internodes are not compressed. The leaves are broad to narrow oval shaped, sometimes a little wavy on the edge. They are clearly stalked, the leaf base includes the shoot.

The terminal, racemose inflorescence is many-flowered. The inflorescence axis is hairy and is surrounded by some bracts . The bracts are about as long as ovary and the short flower stalk together. The flowers are resupinated , the petals are free. The three sepals are roughly the same shape and size, hairy on the outside. The lateral petals lie close to the upper petal and form a tube or hood. The lip is undivided, it forms a long spur at the base. The column is elongated and curved, narrowed at the base. The stamen is small and round, it contains two club-shaped pollinia , each of which is connected to the small adhesive disc (Viscidium) by a short stalk. The small separating tissue between the stigma and the stamen (rostellum) is notched at the tip.

Occurrence

Kreodanthus is common in tropical America. From southern Mexico through Central America and the Caribbean, the distribution area stretches along the Andes to Peru and Bolivia. The species grow in the humus layer of moist mountain forests, they occur up to altitudes of 3200 meters.

Systematics and botanical history

Kreodanthus is classified within the tribe Cranichideae in the subtribe Goodyerinae . According to Dressler, this can be further divided into two groups; Kreodanthus stands together with the majority of the genera that do not have two clearly separated scar surfaces. Related genera are the Aspidogyne and Microchilus , which are also widespread in South America .

The genus Kreodanthus was established in 1977 by Leslie Garay . He chose the Kreodanthus simplex, previously known as Erythrodes simplex , as the type species . The name Kreodanthus is made up of the ancient Greek words κρέας kréas "meat" and ἄνθος ánthos for "flower" or "blossom".

Illustration of Kreodanthus loxoglottis

The following species are included in Kreodanthus :

No longer is included in this genus:

See also

literature

  • Leslie A. Garay: 225 (1). Orchidaceae (Cypripedioideae, Orchidoideae and Neottioideae) . In: Gunnar Harling, Benkt Sparre (ed.): Flora of Ecuador . tape 9 , 1978, ISSN  0347-8742 , p. 287 .
  • Alec M. Pridgeon, Phillip Cribb, Mark W. Chase, Finn Rasmussen (Eds.): Genera Orchidacearum. Orchidoideae (Part 2). Vanilloideae . tape 3/2 . Oxford University Press, New York / Oxford 2003, ISBN 0-19-850711-9 , pp. 107-110 .

Individual evidence

  1. ^ Robert L. Dressler: Phylogeny and Classification of the Orchid Family . University Press, Cambridge 1993, pp. 118 . ISBN 0-521-45058-6
  2. ↑ a b c d e f g h i j k l m n o Rafaël Govaerts (Ed.): Kreodanthus. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved July 12, 2018.

Web links

Commons : Kreodanthus  - album with pictures, videos and audio files