Haworthia arachnoidea
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Haworthia arachnoidea |
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| ( L. ) Duval |
Haworthia arachnoidea is a species of the genus Haworthia in the subfamily of the Affodil family (Asphodeloideae).
description
Haworthia arachnoidea grows stemless and solitary or sprouting. The 25 to 80 inwardly curved, triangular to ovate-lanceolate leaves form a dense rosette with a diameter of 6 to 12 centimeters. The light to dark green, keeled leaf blade is 2 to 7 inches long and 1 to 2 inches wide. The tips often dry up gray-white to brownish and form a protective cover. The leaf surface is not translucent and only occasionally covered with a faint mesh pattern. There are translucent, bristle thorns up to 12 millimeters long on the leaf edge and on the leaf keel . The tip of the leaf is awned to a point.
The inflorescence reaches a length of up to 30 centimeters and consists of 20 to 30 white flowers .
Systematics and distribution
Haworthia arachnoidea is common in the South African provinces of the Western Cape and Eastern Cape .
The first description as Aloe pumila var. Arachnoidea by Carl von Linné in Species Plantarum was published in 1753. Henri-Auguste Duval placed the species in the genus Haworthia in 1809 .
Nomenclatory synonyms are Aloe arachnoidea (L.) Burm.f. (1768), Catevala arachnoidea (L.) Medik. (1786) and Apicra arachnoidea (L.) Willd. (1811, incorrect name ICBN -Article 11.3).
A distinction is made between the following varieties :
- Haworthia arachnoidea var. Arachnoidea
- Haworthia arachnoidea var. Aranea (A.Berger) MBBayer
- Haworthia arachnoidea var. Namaquensis M.B.Bayer
- Haworthia arachnoidea var. Nigricans (Haw.) MBBayer
- Haworthia arachnoidea var. Scabrispina M.B.Bayer
- Haworthia arachnoidea var. Setata (Haw.) MBBayer
- Haworthia arachnoid var. Xiphiophylla (Baker) Halda
proof
literature
- Martin Bruce Bayer , Ernst Jacobus van Jaarsveld : Haworthia arachnoidea . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 210 .
Individual evidence
- ↑ Carl von Linné: Species Plantarum . 1st edition, Lars Salvius, Stockholm 1753, p. 322 ( online ).
- ^ Henri-Auguste Duval: Plantae succulentae in horto Alenconio . Paris 1809, p. 7.
Web links
- Haworthia arachnoidea var. Arachnoidea in the Red List of South African Plants
- Haworthia arachnoid var. Aranea in the Red List of South African Plants
- Haworthia arachnoidea var. Namaquensis in the Red List of South African Plants
- Haworthia arachnoidea var. Nigricans in the Red List of South African Plants
- Haworthia arachnoidea var. Scabrispina in the Red List of South African Plants
- Haworthia arachnoidea var. Setata in the Red List of South African Plants
- Haworthia decipiens var. Xiphiophylla in the Red List of South African Plants