Cotylolabium lutzii
| Cotylolabium lutzii | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name of the genus | ||||||||||||
| Cotylolabe | ||||||||||||
| Garay | ||||||||||||
| Scientific name of the species | ||||||||||||
| Cotylolabium lutzii | ||||||||||||
| ( Pope ) Garay |
The orchid Cotylolabium lutzii is the only species in the genus Cotylolabium . The distribution area is a small area in the southeast of Brazil .
description
Cotylolabium lutzii is a small, perennial , terrestrial plant. The roots , which arise close together in clusters, are fleshy. The few leaves are distributed on the stem. They are small and mostly consist of the leaf base surrounding the stem.
The shoot continues above the leaves as a terminal inflorescence . Flowering time is in March. The peduncle is almost completely covered by bracts . The flowers are relatively large, yellow, protruding horizontally and resupinated . They sit close together in a one-sided spiral on the axis of the inflorescence and open one after the other from bottom to top. The sessile, slightly twisted ovary points upwards, so that an approximately right-angled arc is created in the transition between ovary and horizontal flower. The sepals are shaped in the same way and not grown together. The lateral sepals form a bowl-shaped depression with nectar at the base together with the lip . The lateral petals lie against the dorsal sepal and together with it form a hood over the column . The lip is wedge-shaped at the base, bowl-shaped in the middle with the sides turned upwards, and bent down at the tip. The column is narrow and elongated, the asymmetrical base protrudes slightly beyond the point of attachment to the ovary. The scar consists of two adjacent surfaces, oval and perpendicular to the column axis. The dividing tissue between the stigma and the stamen (rostellum) is firm, somewhat cartilaginous and tapering to a point. The stamen is narrow-oval, pointed at the front, with a round elevation on the upper side. It contains the club-shaped pollinia that stick to an elongated, narrow viscidium . The stamen is surrounded by a clear, thin edge (clinandrium).
distribution
Cotylolabium lutzii is only known from a small area in eastern Brazil. The locations are at altitudes of 500 to 1000 meters. Open grasslands are populated.
Systematics and botanical history
The first description of Cotylolabium lutzii comes from Guido Frederico João Pabst in 1955 under the name Stenorrhynchus lutzii . Henry G. Jones placed the species in 1975 in the genus Spiranthes . In 1980 Leslie Andrew Garay established a genus of its own for this orchid. The name cotylolabium , which he chose, is made up of the Latin words cotyla for a bowl-shaped cavity and labium , "lip".
Cotylolabium is classified within the tribe Cranichideae in the subtribe Spiranthinae . Closely related species are suspected to be in the genus Skeprostachys .
supporting documents
The information in this article comes from:
- 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. 307 .
- 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 and Oxford 2003, ISBN 0-19-850711-9 , pp. 182-186 .
Individual evidence
- ↑ Rafaël Govaerts (Ed.): Cotylolabium. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved April 6, 2020.