Calibanus
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Calibanus is a genus of plants that belongs to the asparagus family (Asparagaceae). The botanical name is derived from Caliban , a character from William Shakespeare's play The Tempest .
description
Vegetative characteristics
The species of the genus Calibanus have a spherical, slightly flattened caudex of up to 50 centimeters in diameter. The thick bark is corky and furrowed. It becomes woody later. The monocarpic leaf rosettes are formed on branches that do not protrude above the caudex surface. The thin leaves are grassy and wiry. The leaf blade is narrow, linear, somewhat concave and keeled. It is up to 30 centimeters long and 2 to 3 millimeters wide. The leaf margins are serrated to roughened and with entire margins at the tip.
Inflorescences and flowers
The inflorescence is a simple panicle with mostly unisexual or sometimes with hermaphrodite flowers . With a height of up to 25 centimeters, it is shorter than the leaves. The partial inflorescences are short stalked . The dry-skinned bracts are egg-shaped or lanceolate and much shorter than the 6 to 8 centimeters long branches they carry. The six, elliptically obovate, dirty whitish yellow, translucent tepals are 2 to 3 millimeters long and 1.5 to 2 millimeters wide.
The six almost identical stamens are 2 to 3 millimeters long. The egg-shaped, dreifächrige ovary is 2.5 to 3 millimeters long and up to 2 millimeters wide. There is one ovule per compartment . The seated scar is three-lobed.
Fruits and seeds
The light straw-brown, spherical to egg-shaped fruits are triangular, 8 to 9 millimeters long and 6 to 7 millimeters wide. They do not tear open and contain a melon-shaped seed 3 to 4 millimeters long and 3 millimeters wide.
cytology
The chromosome number is .
Systematics and distribution
The genus Calibanus is common in central to northeast Mexico . The genus was first described in 1906 by Joseph Nelson Rose . The genus Calibanus is closely related to the genera Beaucarnea and Nolina .
The following species belong to the genus Calibanus : According to Rafaël Govaerts , both species are better placed in the genus Beaucarnea .
- Calibanus glassianus L.Hern. & Zamudio (Synonym: Beaucarnea glassiana (L.Hern. & Zamudio) V. Rojas-Piña )
- Calibanus hookeri (Lem.) Trel. (Syn .: Beaucarnea hookeri (Lem.) Baker )
proof
literature
- Gary Irish: Agaves, yuccas, and related plants: A gardener's guide . Timber Press, 2000, ISBN 0881924423 . Pp. 192-193, pl. 57.
- William Trelease : The desert group Nolineae. Dasylirion . In: Proceedings, American Philosophical Society . Volume 50, 1911, pp. 426-427, (online) .
- CC Walker: Dasylirion . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 301-302 .
Individual evidence
- ^ Contributions from the United States National Herbarium . Volume 10, 1906, p. 90, online .
- ↑ Species list at Kew Checklists , accessed on July 21, 2010.
- ↑ Rafaël Govaerts (ed.): Calibanus Rose as a synonym of Beaucarnea Lem. - Data sheet at World Checklist of Selected Plant Families of the Board of Trustees of the Royal Botanic Gardens, Kew. Last accessed on September 16, 2016.
- ^ Luis Hernández, Sergio Zamudio: Two new remarkable Nolinaceae from Central Mexico . In: Brittonia . Volume 55, number 3, 2003, pp. 226-232 ( doi : 10.1663 / 0007-196X (2003) 055 [0226: TNRNFC] 2.0.CO; 2 ).
