Acrodon
Acrodon | ||||||||||||
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Acrodon bellidiflorus |
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Systematics | ||||||||||||
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Scientific name | ||||||||||||
Acrodon | ||||||||||||
NEBr. |
Acrodon is a genus of plants belonging tothe afternoon flower family (Aizoaceae). The botanical name of the genus is derived from the Greek words akros for 'tip' and odons for 'tooth' and refers to the leaves that are toothed at their tips.
description
The species of the genus Acrodon grow compact to creeping with a thick taproot and a thick, usually short rhizome . The triangular, almost free leaves have a serrated keel and often serrated leaf margins. The teeth are small and brittle or large and bendable. The leaves are 1.3 to 10 inches long. Your epidermis has a thick outer wall filled with crystal sand. The horizontal flakes of wax , broken into small pieces, give the leaves the wrinkled appearance.
The one to three flowers are on bract-bearing flower stalks 15 to 40 millimeters in length. They have five equal sepals . Their white, rarely pink, petals are pink at their tip and have a red-purple central stripe. Often the edges of the petals are colored purple. There are no or only a few white filamentous staminodes that are purple at their tips . The anthers on the white stamens are yellow or purple in color. The flowering time is August. The flowers open at noon and close towards evening.
The five-faced fruits are hard and brown. They contain dark brown seeds , the seed coat of which is covered with well-developed, clear and separate nubs.
The chromosome number is .
Systematics and distribution
The genus Acrodon is common in South Africa in the southwestern districts of the Western Cape Province . It grows in the Rhenosterbosveld and Fynbos with rainfall of more than 200 millimeters annually.
The first description of the genus by Nicholas Edward Brown was published in 1927. The genus Acrodon includes the following species:
- Acrodon bellidiflorus (L.) NEBr.
- Acrodon parvifolius du Plessis
- Acrodon quarcicola H.EK Hartmann
- Acrodon subulatus (Mill.) NEBr.
proof
literature
- Heidrun EK Hartmann (Ed.): Illustrated Handbook of Succulent Plants: Aizoaceae AE . Springer Verlag, Berlin / Heidelberg / New York 2001, ISBN 3-540-41691-9 , pp. 23-25 .
- Gideon Smith et al. a. (Ed.): Mesembs of the World: Illustrated Guide to a Remarkable Succulent Group . Briza Publications, 1998, ISBN 1-875093-13-3 , pp. 178-179 .
Individual evidence
- ↑ The Gardeners' Chronicle . 3rd episode, Volume 78, 1927, p. 12.
further reading
- Hugh Francis Glen: Numerical taxonomic studies in the subtribe Ruschiinae (Mesembryanthemaceae) - Astridia, Acrodon and Ebracteola . In: Bothalia . Volume 16, Number 2, 1986, pp. 203-226. ( PDF )
- Heidrun EK Hartmann : Miscellaneous taxonomic notes on Aizoaceae . In: Bradleya . Volume 14, 1996, pp. 29-56.
Web links
- Photos of Acrodon subulatus
- Distribution area of the genus Acrodon