Tylecodon pearsonii
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| ( Schönland ) Toelken |
Tylecodon pearsonii is a species of the genus Tylecodon in the family of the thick-leaf plants (Crassulaceae).
description
Tylecodon pearsonii grows as a very small plant with a thickened stem that is up to 3.5 centimeters in diameter. The young, gray-green shoots are covered with short, gray-white, truncated to rounded phyllopodia that are up to 1 millimeter long. Older shoots have yellow-brown, peeling bark. The rising to spread out and inwardly curved leaves are heaped at the end of the shoot. The linear to linear-lanceolate to almost stem-round leaves are 2.5 to 8 centimeters long and 5 to 7 millimeters wide. They are gray-green in color and have shiny, small warts. The blade is provided with a shallow furrow on the top and convex on the underside. The base of the leaf is wedge-shaped and the tip is pointed with a reddish and pointed end.
The inflorescence consists of short thyrses , 3.5 to 8 centimeters high , bearing one or three monochasia . The rising or spreading to nodding flowers are on a 6 to 7 millimeter long peduncle. The bell-shaped corolla tube is light brown and bulged in the middle. It is covered with glandular hair and is 15 millimeters long and 7 millimeters wide.
Systematics and distribution
Tylecodon pearsonii is widespread in southern Namibia and in South Africa in the provinces of Northern Cape and Western Cape in the Succulent Karoo . It was first described in 1912 by Selmar Schönland as Cotyledon pearsonii . 1978 Helmut Richard Tölken put the species in the genus Tylecodon .
Synonyms are Cotyledon pearsonii Schönland and Cotyledon luteosquamata Poelln.
literature
- E. van Jaarsveld: Tylecodon . In: Urs Eggli (Ed.): Sukkulenten-Lexikon Volume 4 Crassulaceae (Dickblattgewächse) Ulmer, Stuttgart 2003, ISBN 3-8001-3998-7 , p. 376.
Individual evidence
- ^ Annals of the South African Museum . Volume 9, p. 55 online
- ^ Helmut Richard Tölken: New taxa and new combinations in Cotyledon and allied genera . In: Bothalia . Volume 12, Issue 3, p. 380, 1978 ( PDF ).
Web links
- Photos of plants on the natural site