Buchtienia

Buchtienia is a genus of the orchid family ( Orchidaceae). It contains only three species of herbaceous plants that are native to tropical South America.

Description

The species of the genus Buchtienia are relatively large orchids, they can reach 1 to 1.5 meters in height. The perennials grow terrestrially. The roots are in bunches, they are spindle-shaped tuberous thickened and hairy. Two to five long -stalked leaves form a rosette. The leaves are stripped oval and pointed end.

The inflorescence is terminal, and towers over the leaves far. He is hairy only in the upper part or completely hairless. At intervals he is busy with bracts that cover the stems. The bracts are lanceolate, sometimes slightly hairy. The ovary is not stalked. The numerous flowers are in a loose cluster. They are horizontally from or have something up. Her color is green to pink, they are small and 'upside. The petals are slightly hairy at their base. The dorsal sepal is erect, it is grown to some extent with the column. The lateral sepals are splayed, fused together at the base, they form the pedestal a more or less divided into two / paired bag. The petals are shorter than the dorsal sepal, the top edge shall be liable to this, their base runs asymmetrically down on the column. The lip at its base broadly cuneate, slightly out bags with two lateral thickened nectar glands, fused with the pedestal and enclosed by the bag-like base of the lateral sepals. The front part of the lip is three-lobed, the side lobes are erect, the tip is bent down. The column is short, hairless, slightly curved s- shaped. At the base it is narrow with short asymmetrically over the ovary reaching out "foot", then suddenly becoming wide. The column enclosing the stamen with a urns or bowls of the tissue ( Klinandrium ). The scar consists of two contiguous areas, semi-circular or oval transverse to the column axis oriented margins beaded. The separation between scar tissue and stamen ( rostellum ) is undivided, oblong, without wrinkles, soft. The stamen is oval with a round, button -like elevation on the top. It contains the elongated oval, along deep bipartite pollinia hanging without stalks at a small round adhesive wafer ( Viscidium ).

Occurrence

Buchtienia is widespread in tropical South America. The plants were found only in a few widely separated positions in Ecuador, Peru, Bolivia and Brazil. The species are 700-1400 meters of heights. They grow more humid forests in the shade.

Systematics and botanical history

Buchtienia is classified within the tribe Cranichideae in the subtribe Spiranthinae. The close family relations are unknown.

Buchtienia was first described in 1929 by Rudolf Schlechter with the type species Buchtienia boliviensis .. The name honors Buchtien Otto, a German plant collector and director of the Museo National de la Paz Two other species described Leslie Garay 1978. Szlachetko said, the plants were all the same type, while Salazar maintains the separation into three types to be justified.

The species of the genus Buchtienia:

• Buchtienia boliviensis Schltr.
• Buchtienia ecuadorensis Garay
• Buchtienia rosea Garay

Documents

The information in this article come from mainly:

• Leslie A. Garay: A generic revision of the Spiranthinae. In: Botanical Museum Leaflets of Harvard University. 28, No. 4, 1982, pp. 304-305.
• 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. 179-181.

Furthermore, quoting:

Postgraduate

• List of Orchid Genera

• Orchids
• Orchidaceae