Grusonia bulbispina
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| ( Engelm. ) H.Rob. |
Grusonia bulbispina is a species of plant in the genus Grusonia fromthe cactus family (Cactaceae). The specific epithet bulbispina (lat. Bulbispinus ) means 'with onion-like thickened spines'.
description
Grusonia bulbispina grows low and forms mats with a diameter of 60 to 120 centimeters. The egg-shaped shoot sections with conspicuous 6 to 8 millimeter high cusps are 1 to 1.2 centimeters long. The four central spines are thickened like an onion at their base and 8 to 12 millimeters long. The eight to twelve needle-like radial spines have a length of 3 to 6 millimeters.
The flowers are purple in color.
Distribution, systematics and endangerment
Grusonia bulbispina is common in the Mexican states of Coahuila , Durango , Nuevo León and Zacatecas at altitudes of 850 to 1300 meters. The distribution area is very small and covers about 4500 km².
It was first described as Opuntia bulbispina in 1856 by George Engelmann . Harold Ernest Robinson placed the species in 1973 in the genus Grusonia . Synonyms are Cylindropuntia bulbispina (Engelm.) FMKnuth (1930) and Corynopuntia bulbispina (Engelm.) FMKnuth (1936).
In the Red List of Threatened Species of IUCN is the species as " Endangered (EN) ," d. H. listed as endangered. The species is only known from one location and the habitat areas are reduced due to intensive land use.
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 305 .
Individual evidence
- ^ Synopsis of the Cactaceae of the Territory of the United States and Adjacent Regions . In: Proceedings of the American Academy of Arts and Sciences . Volume 3, 1856, pp. 304-305, (online) .
- ↑ Harold Robinson: New Combinations in the Cactaceae Subfamily Opuntioideae . In: Phytologia . Volume 26, Number 3, 1973, p. 176, (online) .
- ↑ Corynopuntia bulbispina in the IUCN Red List of Threatened Species 2014.1. Posted by: Bárcenas Luna, R., 2013. Retrieved June 20, 2014.