Tribulocarpus dimorphanthus
| Tribulocarpus dimorphanthus | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name of the genus | ||||||||||||
| Tribulocarpus | ||||||||||||
| S.Moore | ||||||||||||
| Scientific name of the species | ||||||||||||
| Tribulocarpus dimorphanthus | ||||||||||||
| ( Pax ) S. Moore |
Tribulocarpus dimorphanthus is the only plant of monotypic genus Tribulocarpus from the family of aizoaceae (Aizoaceae). The botanical name of the genus is derived from the name of the genus Tribulus and its thorny fruits.
description
Tribulocarpus dimorphanthus grows shrubby and reaches heights of up to 50 centimeters (Namibia) or between 100 and 150 centimeters (Somalia). The blade of the leaves is 10 to 20 millimeters long and 10 to 15 millimeters wide. It is covered with spherical papillae and appears whitish. At the base it is reduced to a petiole. Its tip is truncated to blunt.
The short lobed flowers appear in compact groups. The final group is bisexual and has very long flower tubes that appear almost like flower stalks.
The spherical fruits are covered with numerous spines 2 to 8 millimeters in length.
Systematics and distribution
Tribulocarpus dimorphanthus is distributed in dry grasslands in two clearly separated areas in Namibia and Somalia .
The first description as Tetragonia dimorphantha was made in 1889 by Ferdinand Albin Pax . In 1921, Spencer Le Marchant Moore (1850–1931) established that of the genus Tribulocarpus . Robert Stephen Adamson (1885-1965), however, viewed them as a subgenus of Tetragonia ( Tetragonia subg. Tribulocarpus ).
proof
literature
- Heidrun EK Hartmann (Ed.): Illustrated Handbook of Succulent Plants: Aizoaceae FZ . Springer Verlag, Berlin / Heidelberg / New York 2001, ISBN 3-540-41691-9 , pp. 337 .
Individual evidence
- ^ Botanical yearbooks for systematics, plant history and plant geography . Volume 10, p. 12, Leipzig 1889
- ^ Journal of Botany, British and Foreign . Volume 59, p. 228, London 1921
- ^ RS Adamson: The South African species of Aizoaceae. II. Tetragonia . In: Journal of South African Botany . Volume 21, pp. 109-149, 1955
further reading
- Mats Thulin, Joachim Thiede, Sigrid Liede-Schumann: Phylogeny and taxonomy of Tribulocarpus (Aizoaceae): A paraphyletic species and an adaptive shift from zoochorous trample burrs to anemochorous nuts . In: Taxon . Volume 61, Number 1, 2012, pp. 55-66 ( JSTOR 23210314 ).
Web links
- Lectotype of Tetragonia dimorphantha