Eltroplectris

Eltroplectris schlechteriana

Eltroplectris is a genus of the orchid family ( Orchidaceae). It consists of 13 species of herbaceous plants that are native to tropical America.

Description

To Eltroplectris include small, herbaceous, perennial, terrestrial plants growing. The roots arise from the rhizome clumps. They are hairy meaty and dense. One or two long- stalked leaves are basal (not the stem ). The petiole at the base comprises the stem axis. The leaf blade is oval, sunken veins on the upper leaf surface slightly. Sometimes the leaves are already withering at flowering time.

The inflorescence is terminal, he is erect, slender, a little loose - to Vielblütige grape. The peduncle is hairy in upper part, often crowded and busy with reddish brown bracts that envelop him partially. The bracts may be reddish in color, the bracts are green. The flowers are 'upside down and facing upwards, they are greenish, white or colored red. The ovary is cylindrical, sessile or very shortly petiolate. The lateral sepals are in the front part and freely spread apart, the rear portion, together with the rearward extension of the pillar ( pillar ) includes a spur. The upper sepal is shorter than the lateral, completely free, the tip frequently recurved. The petals adhere to the dorsal sepal, forming decurrent with this a hood at the base of the column. The lip at its base long and slender, slightly adherent to the lateral sepals, at the entrance to spur located on the edge of the lip two elongated nectar glands. The front portion of the lip is wider and trilobal. The lateral lobes are turned up and the column adherent, the middle lobe bends down. The column is club-shaped, slender at the base, with a long free pedestal. The scar consists of two separate areas, clearly separated from each other or close to each other, but still distinct, separated by a fold, which runs over the entire bottom of the column along. The separation between scar tissue and stamen ( rostellum ) is fixed, somewhat cartilaginous, oblong- triangular, acute. The stamen is oblong - oval in shape and not from tissues of the column ( Klinandrium ) surrounded. The yellow pollinia are of powdery- granular consistency, club-shaped, with elongated Klebkörper ( Viscidium ).

Occurrence

Eltroplectris is distributed from Florida to the north across the Caribbean to the south of Brazil, Paraguay and Argentina. Central America and the Amazon basin are not populated. The species occur at altitudes up to 500 meters in front. The sites are often characterized by a seasonally dry climate.

Systematics and botanical history

Eltroplectris is classified within the tribe Cranichideae in the subtribe Spiranthinae. Related genera are Mesadenella, Sacoila and Stenorrhynchos.

The genus was described in 1837 by Eltroplectris Rafinesque. Type species is Eltroplectris calcarata. The name Eltroplectris is composed of the Greek words ἐλεύθερος eleutheros, "free", and plectron, " Spur" and refers to the non- adherent to the ovary spur.

The following species are counted to Eltroplectris:

  • Eltroplectris assumpcaoana Campacci & Kautsky
  • Eltroplectris brachycentron Szlach.
  • Eltroplectris calcarata ( Sw. ) Garay & H.R.Sweet
  • Eltroplectris cogniauxiana ( Schltr. ) Pabst
  • Eltroplectris dalessandroi Dodson
  • Eltroplectris janeirensis (Porto & Brade ) Pabst
  • Eltroplectris longicornu ( Cogn. ) Pabst
  • Eltroplectris macrophylla ( Schltr. ) Pabst
  • Eltroplectris misera ( Kraenzl. ) Szlach.
  • Eltroplectris rossii Dodson & G.A.Romero
  • Eltroplectris schlechteriana (Porto & Brade ) Pabst
  • Eltroplectris triloba ( Lindl. ) Pabst

Documents

The information in this article come from mainly:

  • James D. Ackerman: Eltroplectris. In: Flora of North America Editorial Committee ( eds.): Flora of North America North of Mexico. 26, Oxford University Press, New York and Oxford 1993 , p 524 ( eFloras.org, accessed on 19.12.2008 ).
  • Leslie A. Garay: 225 (1). Orchidaceae ( Cypripedioideae, Orchidoideae and Neottioideae ). In: Gunnar Harling, Benkt Sparre (eds.): Flora of Ecuador. 9, 1978, ISSN 0347-8742, pp. 238-239.
  • Leslie A. Garay: A generic revision of the Spiranthinae. In: Botanical Museum Leaflets of Harvard University. 28, No. 4, 1982, p 317
  • Alec M. Pridgeon, Phillip Cribb, Mark W. Chase and Finn Rasmussen ( ed.): Genera Orchidacearum. Orchidoideae (Part 2). Vanilloideae. 3/2, Oxford University Press, New York and Oxford, 2003, ISBN 0-19-850711-9, pp. 200-204.

Furthermore, quoting:

Postgraduate

  • List of Orchid Genera
  • Orchids
  • Orchidaceae
Constantine Samuel Rafinesque Perennial plant Resupination Ovary (botany) Labellum (botany) Stigma (botany) Pollinium List of natural Orchidaceae genera
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