Barkeria
| Barkeria | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Barkeria spectabilis |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Barkeria | ||||||||||||
| Knowles & Westc. |
The genus Barkeria from the family of the orchid (Orchidaceae) includes 15 species , all of which occur in Central America. The plants usually grow epiphytically or on rocks.
description
All species of this genus form pseudobulbs on a creeping rhizome at a short distance . These are long and cigar-shaped, they consist of several internodes . The rhizome and shoot are surrounded by membranous lower leaves. In the upper area of the pseudobulbs, two to seven, occasionally up to twelve, two-line leaves are distributed . The leaves are long oval, fleshy, folded in the bud along the midrib. The plants are - due to a dry period in their home - mostly deciduous.
The inflorescence is a raceme or a little branched panicle ; he appears at the top of the rung. The resupinated flowers are generally pink in color, occasionally white, with contrasting red and yellow markings on the lip . They measure about 1.5 centimeters in diameter in Barkeria shoemakeri and up to eight centimeters in diameter in Barkeria spectabilis . In Barkeria uniflora there are only one to three flowers on an inflorescence , while Barkeria palmeri can have up to 100. The sepals and petals are almost equally shaped - lanceolate and pointed. The lip is unlobed with a central, often yellow, callus . Even in ultraviolet light - visible to insects - the lip shows a contrasting pattern. The winged column is fused with the lip at the base or is completely free. In contrast to the epidendrum, the rostellum sits transversely to the axis of the column and leaves no cavity when removed. The stamen contains four pollinia .
distribution
The species of the genus Barkeria occur from Mexico to Panama. There they grow as epiphytes or lithophytes in periodically dry forests at altitudes of 200 to 2000 meters.
Culture
Species of the genus Barkeria are found comparatively frequently in culture, as well as hybrids with other species of related genera. In general, the plants need a lot of light, humidity and a good supply of water during the growing season with a quick-drying root area. The substrate must remain dry during the rest period.
Systematics
Within the subfamily Epidendroideae , the genus Barkeria is classified in the tribe Epidendreae and there in the subtribe Laeliinae . Barkeria is closely related to Epidendrum , Oerstedella , Caularthron and Orleanesia .
The following 16 species have been described in this genus:
- Barkeria archilarum Chiron : The species first described in 2011 occurs in Guatemala.
- Barkeria barkeriola Rchb.f. , western Mexico
- Barkeria dorotheae half. , Mexico
- Barkeria fritz-Halbingeriana Soto Arenas , Oaxaca
-
Barkeria lindleyana Bateman ex Lindl. : With the varieties:
- Barkeria lindleyana subsp. Lindleyana , Costa Rica, Guatemala, El Salvador, Honduras
- Barkeria lindleyana subsp. vanneriana (Rchb.f.) Thien , Mexico
- Barkeria melanocaulon A. Rich. & Galeotti , Oaxaca
- Barkeria naevosa (Lindl.) Schltr. , Oaxaca, Guerrero
- Barkeria obovata (C.Presl) Christenson : It occurs from Mexico to Panama.
- Barkeria palmeri (Rolfe) Schltr. , Mexico
- Barkeria scandens (Lex.) Dressler & Halb. , Mexico
- Barkeria shoemakeri half. , Mexico
- Barkeria skinneri (Bateman ex Lindl.) Paxton , Mexico and Guatemala
- Barkeria spectabilis Bateman ex Lindl. , southern Mexico, El Salvador, Guatemala and Nicaragua
- Barkeria strophinx (Rchb.f.) half. , Michoacan
- Barkeria uniflora (Lex.) Dressler & Halb. , Mexico
- Barkeria whartoniana (C. Schweinf.) Soto Arenas , Oaxaca
Historical
The genus Barkeria was first described by Knowles and Westcott in 1838 and named in honor of the plant importer, lawyer, natural scientist and horticultural owner George Barker (1776-1845) from Springfield, England, who introduced the specimens on which the description is based from Mexico.
literature
- Carl L. Withner (1998): The Cattleyas and their relatives . Vol. 5, pp. 17ff. Timber Press, Portland, Oregon ISBN 0-88192-456-3
- Jürgen Röth (1983): Orchids . P. 131f. VEB German Agricultural Publishing House Berlin.
Individual evidence
- ^ Cássio van den Berg et al. (2000): A phylogenetic analysis of Laeliinae (Orchidaceae) based on sequence data from internal transcribed spacers (ITS) of nuclear ribosomal DNA. Lindleyana 15 (2): 96-114. Online, accessed on December 14, 2007 ( Memento of the original from September 26, 2007 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ a b c d e f g h i j k l m n o p q r Rafaël Govaerts (Ed.): Barkeria. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved July 7, 2018.
- ↑ Lotte Burkhardt: Directory of eponymous plant names . Extended Edition. Botanic Garden and Botanical Museum Berlin, Free University Berlin Berlin 2018. [1]
