Baskervilla
Baskervilla colombiana
Baskervilla is a genus of the orchid family ( Orchidaceae). It consists of about ten species of herbaceous plants that are native to South and Central America.
Description
The species of the genus Baskervilla are terrestrial herbaceous plants. The rhizome is rather short and ascending. The fleshy, hairy roots grow horizontally. Several sheets are arranged in a rosette. They are stalked and oval shaped to lanceolate. The terminal, racemose inflorescence is upright, he is busy at intervals with bracts. The numerous small flowers are close together or loose, they are not 'upside. The cylindrical ovary is not stalked. The sepals are free and spread the side are asymmetrical at the base. The petals are abruptly narrowed at its base ( nailed ), the narrow part is dorsally fused with the column, the wide, front part is repulsed to spread. The lip is united at the base with the column, where it is more or less extended bowl - up baggy and fitted with a pair of fins at the point of Verwachsens. The slats to form a tubed entrance to nectary. The column is club-shaped, without walking. She wears at the end of the scar lying horizontally, this is oval shaped and surrounded by a beaded border. The separation between scar tissue and stamen ( rostellum ) is clearly formed. The elongated oval dorsal stamen sits at the end of the column with which it is connected via a short, thick connective. In two chambers it contains a total of four pollinia. These are unequal in size and approximately pear -shaped. The long stems of vice -formed pollen mass ( Caudicel ) hanging over a short, triangular link of columns tissue ( hamulus ) at the small viscid disc ( Viscidium ).
Occurrence
Baskervilla comes in higher elevations of Nicaragua, Costa Rica and Panama before, further south along the Andes from Venezuela to Peru. Baskervilla paranaensis has a distribution area in southern Brazil. The species occur at altitudes 1000-3300 meters. They colonize cloud forests.
Systematics and botanical history
The genus Baskervilla was established by Lindley in 1840 with the type species Baskervilla assurgens. It is named after Thomas Baskerville, an English physician and botanist.
Baskervilla is classified within the tribe Cranichideae in the subtribe Cranichidinae. There are ten known types:
- Baskervilla assurgens Lindl.
- Baskervilla auriculata Garay Baskervilla auriculata auriculata var
- Baskervilla auriculata var yungasensis T.Hashim.