Dinteranthus
| Dinteranthus | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dinteranthus microspermus |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Dinteranthus | ||||||||||||
| Schwantes |
Dinteranthus is a genus of plants fromthe afternoon flower family (Aizoaceae). The botanical name honors the German botanist Kurt Dinter .
description
The plants of the genus Dinteranthus grow compact. They are stemless and develop 1 to 6 branches, each of which carries a single pair of leaves during the dormant phase. The leaves are more or less hemispherical to hemispherical. About one to two thirds of the leaf pairs have grown together and form a gaping or closed gap at the top. Your epidermis is bare or covered with rounded or pointed papillae . In the very thick outer epidermis wall there is a layer of crystal sand up to 50 micrometers thick , which gives the plants their white, stone-like appearance.
The terminal flowers are short stalked and seemingly without bracts . They reach 6 to 8 centimeters in diameter and open in the late afternoon. There are 6 to 8 sepals available, the petals are bright gold. The upright stamens are sometimes white or reddish at the base and form a ring. The fruits are similar to those of the genus Delosperma , are mostly 6 to 10 fan-shaped and stay on the plants for several years. The seeds are reddish brown and darken with age.
Systematics and distribution
The genus Dinteranthus is widespread near Warmbad in Namibia and in the vicinity of the cities of Gordonia , Hay and Kenhardt , in Namaqualand and in the Northern Cape Province in South Africa. The plants grow on slopes or plains covered with quartz gravel in areas with less than 100 millimeters of precipitation.
The first description was made in 1926 by Gustav Schwantes . The type species is Dinteranthus microspermus .
According to Hartmann (2001), the genus includes the following species:
- Dinteranthus inexpectatus Dinter ex Jacobsen
- Dinteranthus microspermus (Dinter & Derenberg) Schwantes
- Dinteranthus pole-evansii (NEBr) Schwantes
- Dinteranthus puberulus N.E.Br.
- Dinteranthus vanzylii (L.Bolus) Schwantes
- Dinteranthus wilmotianus L. Bolus
The genus Dinteranthus is similar to the genus Lithops in many ways . In particular, the species Dinteranthus vanzylii is difficult to distinguish from a Lithops and was originally described as Lithops vanzylii by Harriet Margaret Louisa Bolus in 1932 . The genus Dinteranthus differs from the genus Lithops in particular in that it has a higher number of seed chambers and the significantly smaller seeds.
proof
literature
- Gideon Smith et al. a .: Mesembs of the World: Illustrated Guide to a Remarkable Succulent Group . Briza Publications 1998, ISBN 1-875093-13-3 , pp. 96-97.
- Heidrun EK Hartmann: Illustrated Handbook of Succulent Plants: Aizoaceae A – Z , Springer, Berlin / Heidelberg / New York 2001, ISBN 3-540-41691-9 , pp. 215–217,
Individual evidence
- ^ Journal of Succulents . Volume 2, p. 184, Berlin 1926
- ↑ Heidrun EK Hartmann: Illustrated Handbook of Succulent Plants: Aizoaceae A-Z . Springer, Berlin / Heidelberg / New York 2001, p. 216
further reading
- Niko Sauer: Dinteranthus . In aloe . Volume 13, 1975, pp. 9-24,
- Niko Sauer: Dinteranthus pole-evansii, D. microspermus, D. wilmotianus . In: Flowering Plants of Africa . Volume 45, 1978, panels 1778 A&B, 1779 A&B, 1780 A&B
