familyCactaceae
subfamilyCactaceae subfam. Cactoideae
genusEchinocactus
speciesEchinocactus polycephalus
Echinocactus polycephalus var. xeranthemoides
Contr. U.S. Natl. Herb. 3: 358. 1896.
Endemic
Synonyms: Echinocactus polycephalus subsp. xeranthemoides (J. M. Coulter) N. P. Taylor
Treatment appears in FNA Volume 4. Treatment on page 190.
Stems gray-green to yellow-green. Spines red to straw colored, canescent, puberulent, or glabrous. Fruit scales tan, yellow, or reddish, aging yellow, 16–30 mm, usually longer than dried tepals at fruit apex. Seeds rounded (rarely faceted), 2.4–3.1 mm, smooth (exposed surfaces of testa cells flat or slightly convex, uniformly shiny). 2n = 22.
Phenology: Flowering Jun–Aug.
Habitat: Rocky hills, slopes, and ledges of canyons, Great Basin and Mojave desert scrub, igneous and calcareous substrates
Elevation: 500-1700 m
Discussion
Selected References
None.
Lower Taxa
None.
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