Echinocereus boyce-thompsonii
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Echinocereus boyce-thompsonii is a species of plant in the genus Echinocereus from the cactus family(Cactaceae). The specific epithet boyce-thompsonii honors the American businessman and founder of the Boyce-Thompson Southwestern Arboretum (now Boyce Thompson Arboretum State Park ) in Superior, Arizona William Boyce Thompson (1869-1930).
description
Echinocereus boyce-thompsonii forms loose groups consisting of three to twelve shoots . The green cylindrical to elongated shoots are 10 to 25 centimeters long and have a diameter of 4 to 7.5 centimeters, which are barely covered by the thorns. There are twelve to eighteen ribs , sometimes more, that are not noticeably humped. The three straight, slender, bent, flexible central spines are light yellow or straw-colored and have a dark to light brown tip. They have a length of 2.5 to 7.5 centimeters. The bottom of them is about two inches long. The ten to 14 spread, straight, whitish or greyish radial spines are 1.2 to 2 centimeters long.
The broad, funnel-shaped flowers are magenta to reddish purple in color. They appear in the upper half of the shoots, are 5 to 6.2 inches long and reach the same diameter. The spherical, fleshy, initially green fruits turn red later.
Distribution and systematics
Echinocereus boyce-thompsonii is found in the United States in the state of Arizona in the Sonoran Desert .
The first description by Charles Russell Orcutt was published in 1926. Nomenclatory synonyms are Echinocereus fendleri var. Boyce-thompsonii (Orcutt) LDBenson (1944), Echinocereus fasciculatus var. Boyce-thompsonii (Orcutt) LDBenson (1969), Echinocereus fasciculatus subsp. boyce-thompsonii (Orcutt) NPTaylor (1997) and Echinocereus fasciculatus f. boyce-thompsonii (Orcutt) E. Lutz (2000, nom. inval. ICBN -Article 33.3, 11.1).
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 192 .
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 29.
- ↑ Charles Russell Orcutt: Cactography: All About Cacti . Number 4, National City and San Diego, 1926.
Web links
- Photo of Echinocereus boyce-thompsonii