Pachycereus gaumeri
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| Britton & Rose |
Pachycereus gaumeri is a species of plant in the genus Pachycereus in the cactus family(Cactaceae). The specific epithet honors the American botanist and naturalist George Franklin Gaumer (1850–1929), who discovered the species.
description
Pachycereus gaumeri grows tree-shaped with long, slender shoots , is not or barely branched and reaches heights of up to 8 meters. It forms a trunk up to 1.5 meters high. The three to four very sharp-edged ribs look like wings. The areoles on it are far apart. The ten or so thorns are gray or reddish black and up to 5 centimeters long.
The cylindrical to funnel-shaped, greenish white flowers give off a foul-smelling fragrance. They open at night and are 8.5 to 9.5 inches long. Your pericarpel and the flower tube are covered with fleshy, leaf-like scales with bent-back tips, as well as some wool and some bristles. The spherical fruits are bright red.
Distribution, systematics and endangerment
Pachycereus gaumeri is common in the Mexican states of Yucatán , Chiapas and Veracruz .
The first description was in 1920 by Nathaniel Lord Britton and Joseph Nelson Rose . Nomenclatory synonyms are Anisocereus gaumeri (Britton & Rose) Backeb. (1942) and Pterocereus gaumeri (Britton & Rose) T.MacDoug. & Miranda (1954).
The species is not well known.
In the Red List of Threatened Species of IUCN is the species as " Endangered (EN) ," d. H. listed as endangered.
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 489-490 .
Individual evidence
- ^ NL Britton , JN Rose : The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family . tape II . The Carnegie Institution of Washington, Washington 1920, p. 71 .
- ↑ Pachycereus gaumeri in the Red List of Threatened Species of the IUCN 2013.2. Posted by: Arias, S., Durán, R., Gómez-Hinostrosa, C., Hernández, H. & Tapia, JL, 2009. Retrieved January 25, 2014.
further reading
- Martha Méndez, Rafael Durán, Ingrid Olmsted, Ken Oyama: Population Dynamics of Pterocereus gaumeri, a Rare and Endemic Columnar Cactus of Mexico . In: Biotropica . Volume 36, Number 4, 2004, pp. 492-504, DOI: 10.1646 / 1601 .