familyCactaceae
subfamilyCactaceae subfam. Cactoideae
genusEchinocactus
speciesEchinocactus polycephalus
Difference between revisions of "Echinocactus polycephalus var. polycephalus"
Treatment appears in FNA Volume 4. Treatment on page 190.
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|accepted_name=Echinocactus polycephalus var. polycephalus | |accepted_name=Echinocactus polycephalus var. polycephalus | ||
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name=Echinocactus polycephalus var. polycephalus | name=Echinocactus polycephalus var. polycephalus | ||
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|subfamily=Cactaceae subfam. Cactoideae | |subfamily=Cactaceae subfam. Cactoideae | ||
|genus=Echinocactus | |genus=Echinocactus | ||
Latest revision as of 21:58, 5 November 2020
Stems gray-green. Spines red to gray, infrequently straw colored, canescent. Fruit scales reddish to maroon, aging tan or black, 10–14 mm, usually shorter than dried tepals at fruit apex, spine tips canescent with strap-shaped, unicellular trichomes. Seeds rounded or faceted with flat planes transversing testa, 2.8–4.7 mm, papillate-roughened (exposed surfaces of testa cells protruding, hemispheric to hexagonally faceted, appearing dull except for microscopically sparkling individual facets). 2n = 22.
Phenology: Flowering Jul–Aug.
Habitat: Rocky flats and washes, bajadas, rock ledges, Mojave and Sonoran desert scrub, igneous and calcareous substrates
Elevation: [10-]30-1700 m
Distribution
Ariz., Calif., Nev., Mexico (Sonora).
Discussion
Selected References
None.
Lower Taxa
None.