Aichryson Dumosum
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| ( Lowe ) Praeger |
Aichryson dumosum is a species of the Aichryson genusin the Crassulaceae family.
description
Vegetative characteristics
Aichryson dumosum grows as an annual or biennial , rather sparsely branched, bald to sparsely hairy, herbaceous plant and reaches heights of 15 to 30 centimeters. The bare shoots have a diameter of 4 to 7 millimeters. The lower branches are dichotomously ascending. Their indistinctly stalked, inverted lanceolate, blunt, tiny downy-haired, often purple-tinged leaves are 12 to 18 millimeters long and 3 to 4 millimeters wide. Its base is narrowed. The leaf blade is widest above the center .
Generative characteristics
The many-flowered inflorescence is more or less evenly. The six to seven-fold flowers are on a stalk up to 9 millimeters long and have a diameter of 8 to 10 millimeters. Their sepals are almost bare. The bright yellow, egg-shaped, pointed petals are 4 to 5 millimeters long and have a reddish central rib.
Systematics and distribution
Aichryson dumosum is common in the southwest of Madeira at heights of 300 to 400 meters.
The first description as Sempervivum dumosum by Richard Thomas Lowe was published in 1864. Robert Lloyd Praeger placed the species in 1932 in the genus Aichryson .
proof
literature
- Reto Nyffeler: Aichryson dumosum . In: Urs Eggli (Hrsg.): Succulent lexicon. Crassulaceae (thick leaf family) . Eugen Ulmer, Stuttgart 2003, ISBN 3-8001-3998-7 , pp. 23 .
Individual evidence
- ↑ A Manual Flora of Madeira and the adjacent Island of Porto Santo and the Desertas . Volume 1, 1868, p. 328 ( online ).
- ^ Robert Lloyd Praeger: An Account of the Sempervivum group . 1932, p. 127.
Web links
- Aichryson dumosum inthe IUCN Red List of Threatened Species 2013.1. Posted by: Carvalho, JA, 2011. Retrieved September 5, 2013.