Anguloa

Anguloa clowesii

The genus Anguloa from the orchid family (Orchidaceae) comprises nine species, all in South and Central America happen. The plants are quite large for an orchid and grow mostly on the ground or on rocks.

Description

All species of this genus form of a creeping rhizome at a short distance pseudobulbs. These are oval and somewhat laterally compressed with several indistinct lateral ridges; they consist of a single internode. Rhizome and pseudobulbs are surrounded by low- leaves at the top of the pseudobulbs sit three leaves. The leaves are Plikat (folded), with clearly visible on the bottom Vein. They run like a stalk off at the base. The pseudo- be up to 20 centimeters in length, the leaves up to one meter.

The inflorescence appears laterally from the base of the pseudobulbs and carries only one flower. The resupinierten flowers are fleshy or waxy, large and white, pink or yellow. The three sepals together are inclined bell-shaped and enclose the petals. The two lateral sepals are fused with the column to a small sac-like cavity. The lip is three-lobed, united at the base hinged to the column, the two lateral lobes enclose the tubular column, the middle lobe runs in a curved tip. On the lip is a callus. The column is just at the base with an extension of the lip has grown ( " column -foot "). The stamen is located terminally and is bent down towards the column axis. The side of the dust sheet located on the column two small appendages. The four hard, yellow pollinia are connected by an elongated stalks with a heart-shaped holdfast ( Viscidium ).

The species are pollinated by male orchid bees ( Euglossini ). By the weight of the insects hinged lip is brought out of balance, and pivots against the column. There the bees is stapled by the sticky Viscidiums the pollinia to the thorax or adhesive already on insect pollinia are placed on the scar.

Dissemination

The species of the genus Anguloa come in northwestern South America from Venezuela through Colombia, Ecuador and Peru to Bolivia before. They grow there on rocks, shore breaks off or occasionally as epiphytes in humid forests at altitudes from 1500 to 2500 meters.

System

Have been described following nine species and some varieties in this genus:

  • Anguloa brevilabris Rolfe (1915 ) Colombia.
  • Anguloa cliftonii Rolfe (1910 ) Colombia.
  • Anguloa clowesii Lindl. ( 1844), Colombia and Venezuela.
  • Anguloa dubia Rchb.f. (1882 ) Colombia.
  • Anguloa eburnea BSWilliams (1868 ) Colombia and Ecuador.
  • Anguloa hohenlohii C.Morren (1853 ) Anguloa hohenlohii var hohenlohii Colombia and Venezuela.
  • Anguloa hohenlohii var macroglossa ( Schltr. ) Oakeley (1999) Colombia.
  • Anguloa virginalis var turneri Oakeley (1999) Colombia.
  • Anguloa virginalis var virginalis Venezuela, Colombia, Ecuador, Peru and Bolivia.

In addition, there are some naturally occurring hybrids:

  • Anguloa × rolfei Sander ex Rolfe (1915 ) Colombia, parents are A. brevilabris × A. cliftonii.
  • Anguloa × ruckeri Lindl. (1846 ) in Venezuela, from A. clowesii × A. hohenlohii.
  • Anguloa × speciosa Linden (1855 ), Colombia, the parents are A. tognettiae × A. virginalis.

Culture

Due to the large, colorful flowers, the plants are to be found in culture. Make no special claims, but should be more than other orchids are fertilized. There are several cultivated varieties and hybrids with Lycaste species.

Documents

  • C. H. Dodson, C. A. Luer (2005): Orchidaceae part 2 (Aa - Cyrtidiorchis ). In: G. Harling, L. Andersson ( eds.): Flora of Ecuador. Vol 76, pp. 43ff. Botanical Institute, Göteborg University, ISBN 91-88896 -51- X
  • Jürgen Röth (1983 ): orchids. 120f. VEB German Agriculture Verlag Berlin.
Epidendroideae Resupination Labellum (botany) Pollinium Stigma (botany)
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