Burmannia nepalensis
| Burmannia nepalensis | ||||||||||||
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| Burmannia nepalensis | ||||||||||||
| ( Miers ) Hook.f. |
Burmannia nepalensis is a non-leafy plant species fromthe Burmanniaceae family . It is native to the warm parts of Asia.
description
Burmannia nepalensis is an annual, leaf-green, continuously whitish, unbranched to very rarely branched herbaceous plant that reaches a height of 4 to 13 centimeters. It is mycotrophic . There is no rhizome, the roots are thickened and short. The leaves are 2 to 3.3 millimeters long and 1 millimeter wide. They are absent at the base and only occur occasionally on the stem, where they are scale-like, triangular, tapering to a point, close-fitting and keeled.
Flowering time is between July and December, rarely until February. The inflorescence is a double wrap consisting of mostly three to five, rarely one or seven to nine flowers . The strongly stalked flowers are 4 to 6.9 millimeters long and from white-yellow to pure white, then with yellow lobes. The flower tube is cylindrical three-angled and 1.5 to 2.5 millimeters long, the 0.7 to 2 millimeter wide wings are halved elongated-round, halved ovoid to halved inverted ovoid and run from the base of the outer lobes to below the base of the ovary . The outer lobes are oblong-round to ovate, with rolled edges and a pointed outer end, the inner circular and small. The stamens are sessile, the connective is "T" or "Y" -shaped and has two short, lateral arms that support the thecae and a pointed spur at the base. The stylus is thread-shaped, at its end there are three almost sessile scars .
The ovaries are approximately spherical and 1.5 to 3 millimeters long and 1.5 to 2.5 millimeters wide. The approximately spherical capsule opens along transverse slits. The seeds are numerous, yellow and elliptical.
distribution
Burmannia nepalensis is native to the warm parts of Asia from Nepal and India via Thailand and Sumatra to China, Taiwan, Japan, the Ryukyu Islands and the Philippines at altitudes between 400 and 1600 meters. It is found on soils of dense forests in valleys and on hilltops as well as on cliffs made of granite or limestone with humus soil, associated with species of Itea , Bambusa , Cunninghamia and Pinus .
Systematics
The species was first described in 1841 by John Miers as Gonianthes nepalensis , then in 1888 by Joseph Dalton Hooker it was added to the genus Burmannia.
proof
- ↑ a b c d e Dianxiang Zhang: Systematics of Burmannia L. (Burmanniaceae) in the Old World , pp. 245–248, in: Hong Kong University Theses Online, Thesis (Ph.D.), University of Hong Kong, 1999
- ↑ Rafaël Govaerts (ed.): Burmannia - World Checklist of Selected Plant Families of the Royal Botanic Gardens, Kew. Last accessed on June 24, 2018.