Echinocactus polycephalus
| Echinocactus polycephalus | ||||||||||||
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Echinocactus polycephalus |
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| Echinocactus polycephalus | ||||||||||||
| Engelm. & JMBigelow |
Echinocactus polycephalus is a species of plant in the genus Echinocactus from the cactus family(Cactaceae). Foreign language trivial names are "Biznaga de Chilitos", "Cotton Top Cactus", "Harem Cactus", "Many-Headed Barrel Cactus" and "Woolly-Headed Cactus".
description
Echinocactus polycephalus usually sprouts and forms clumps with spherical to cylindrical shoots that reach heights of 30 to 60 centimeters with a diameter of 10 to 20 centimeters. There are 13 to 21 ribs . The 4 reddish to slightly purple-colored, irregularly spread central spines turn gray with age. The lowest of them is bent a little downwards, the others are more or less straight and strongly transversely banded. The central spines are 6 to 7.5 inches long. The 6 to 8 irregularly spread radial spines resemble the central spines and are 3 to 4.5 centimeters long.
The yellow flowers have a pink central stripe. They reach lengths of 5 centimeters and the same diameter. The fruits, which are dry when ripe, are covered with white hairs and are 1.2 to 2 centimeters long.
Distribution, systematics and endangerment
The distribution area of Echinocactus polycephalus extends from the southern United States to northern Mexico . The first description was published in 1856 by George Engelmann and John Milton Bigelow . The following subspecies are distinguished:
- Echinocactus polycephalus subsp. polycephalus
- Echinocactus polycephalus subsp. xeranthemoides (JMCoult.) NPTaylor
A synonym of Echinocactus polycephalus subsp. polycephalus is Echinocactus polycephalus var. flavispina F. Haage ex Quehl (1899).
In the Red List of Threatened Species of the IUCN , the species is listed as " Least Concern (LC) ". H. listed as not endangered.
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 189-190 .
Individual evidence
- ^ Proceedings of the American Academy of Arts and Sciences . Volume 3, Boston 1856, p. 276 (online) .
- ^ H. Quehl: News . In: Monthly for cactus science . Volume 9, Number 3, 1899, pp. 43-44 (online) .
- ↑ Echinocactus polycephalus in the IUCN Red List of Threatened Species 2013.2. Posted by: Martin, L., Felger, RS & Burquez Montijo, A., 2010. Retrieved December 15, 2013.
