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Opuntia polyacantha var. erinacea (Engelm. & J.M.Bigelow) B.D.Parfitt   (redirected from: Opuntia erinacea Engelm. & Bigelow ex Engelm.)
Family: Cactaceae
grizzlybear pricklypear, more...grizzlybear pricklypear, grizzlybear pricklypear, grizzly bear prickly pear, prickly pear, Mohave pricklypear cactus, Utah grizzlybear pricklypear
[Opuntia erinacea Engelm. & Bigelow ex Engelm., moreOpuntia erinacea var. erinacea Engelm. & J.M. Bigelow, Opuntia erinacea var. paucispina Dunkle, Opuntia erinacea var. ursina (A. Weber) Parish, Opuntia polyacantha subsp. erinacea (Engelm. & J. M. Bigelow) Guiggi, Opuntia rubrifolia Engelm. ex Coult., Opuntia ursina A. Weber, Opuntia xerocarpa Griffiths]
Opuntia polyacantha var. erinacea image
Tony Frates
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Donald J. Pinkava in Flora of North America (vol. 4)
Stem segments elliptic to obovate, (7-)10-20 × 5-10 cm; areoles 8-14 per diagonal row across midstem segment, 12-17 mm apart. Spines 1-18 per areole, in essentially all areoles, grading in size and orientation, yellow to dark brown, turning gray, pink-gray, or gray-brown, the longest spreading and curling in all directions especially on proximal stem segments, usually ascending and ± straight near stem segment apex, deflexed to reflexed near base, (35-)40-90(-185) mm, spines of older stem segments more numerous, less straight, and reflexed. Fruits stout; areoles 20-33, each bearing 7-13 spines, 8-20 mm. 2n = 44. Flowering late spring. Deserts, desert grasslands, juniper woodlands, alluvial, sandy or gravelly soils; 1000-1400 m; Ariz., Calif., Nev., Utah. Plants of Opuntia polyacantha var. erinacea with very long, wavy hairlike spines have been treated as O. ursina or O. erinacea var. ursina. Such plants, however, occur at the original (type) locality for var. erinaceae, and the characteristic spines may appear on the oldest stem of otherwise straight-spined plants. The name Opuntia erinacea has been widely misapplied to some plants of other varieties of O. polyacantha.

JANAS 35(2)
PADS: elliptic to obovate, (7-)10-20 cm long, 5-10 cm broad. AREOLES: ca. 12-17 mm apart, 8-14 in a row diagonal across midpad. SPINES: in essentially all areoles, of one kind, grading in size and orientation, yellow to dark brown turning gray, pink-gray, or gray-brown, 1-18, the longest spreading and curling in all directions, usually ascending and ± straight near pad apex, deflexed to reflexed near base, (3.5-)4-9(‑18.5) cm long; spines of older pads more numerous, less straight, and more deflexed. FRUITS: stout; areoles 20-33, each bearing 7-13 spines, 8-20 mm long. 2n = 44. NOTES: See also parent taxon. Alluvial, sandy or gravelly soils, desert to desert grasslands and juniper woodlands, Mohave Co.; 1050-1350 m (3500-4500 ft); late spring; CA, NV, UT. REFERENCES: Pinkava, Donald J. Cactaceae. 2003. J. Ariz. - Nev. Acad. Sci. Volume 35(2).
Opuntia polyacantha var. erinacea
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Opuntia polyacantha var. erinacea image
Tony Frates
Opuntia polyacantha var. erinacea image
Wendy Hodgson
Opuntia polyacantha var. erinacea image
Wendy Hodgson
Opuntia polyacantha var. erinacea image
Wendy Hodgson
Opuntia polyacantha var. erinacea image
Wendy Hodgson
Opuntia polyacantha var. erinacea image
Kirstin Phillips
Opuntia polyacantha var. erinacea image
Wendy Hodgson
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The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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