Burmannia oblonga
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Burmannia oblonga is a non-leafless plant species fromthe Burmanniaceae family . It is native to Asia from Indochina to Thailand and the Malaysian Peninsula to Sumatra.
description
Burmannia oblonga is an annual, leaf-green, continuously whitish, unbranched, slender herbaceous plant that reaches a height of 7 to 20 centimeters at flowering time. It is completely mycotrophic . The rhizome is spherical with a diameter of 2 to 5 millimeters, the roots are thickened and short. The leaves are 1.5 to 3.2 millimeters long, they are absent at the base and only appear sporadically on the stem, where they are scale-like, triangularly tapering, tightly fitting and keeled.
The flowering period is between July and December, rarely until February and March. The inflorescence is usually made of up to four, rarely a bloom existing double winding . The almost unstalked to short stalked flowers are 8 to 14.4 millimeters long and white in color. The flower tube is cylindrical and 4.5 to 5.5 mm long, the 2.8 to 5.7 mm wide blades are halved oblong-round or rectangular and extend from the neck of the outer cloth flowers to approach the ovary . The outer flower lobes are broadly square with margins and around 2 millimeters long and 2 to 2.5 millimeters wide, the inner ones are absent, but occasionally reduced to a sack-like structure that connects the adjacent outer lobes. The stamens are sessile and start in the pharynx, about 0.5 mm from the base of the flower lobes. The connective has two very short arms that carry the thecae and a short, pointed, downward-pointing spur at the base. The stylus is thread-shaped, with three sessile scars at its end .
The ovaries are spherical to diamond-shaped and around 4 millimeters long. The capsule opens along irregular transverse slits. The seeds are numerous, yellow and elliptical.
distribution
Burmannia oblonga is native to Asia from Indochina via Thailand and the Malaysian Peninsula to Sumatra at altitudes between 800 and 1100 meters. It is found in evergreen forests on damp rocky ground, often associated with bamboo species. She comes from in Hainan, Sumatra, Malaysia, Cambodia, Thailand and Vietnam.
Systematics
The species was first described in 1904 by Henry Nicholas Ridley .
proof
- ↑ a b c d e Dianxiang Zhang: Systematics of Burmannia L. (Burmanniaceae) in the Old World. In: Hong Kong University Theses Online, Thesis (Ph.D.), University of Hong Kong, 1999, pp. 248–250.
- ↑ Rafaël Govaerts (ed.): Burmannia - World Checklist of Selected Plant Families of the Royal Botanic Gardens, Kew. Last accessed on June 24, 2018.