Sclerocactus parviflorus Clover Jotter 1941

BLESSING DEVIL'S-CLAW CACTUS, DEVIL'S-CLAW CACTUS, EAGLE-CLAW CACTUS

Echinocactus parviflorus (Clover & Jotter) L. D. Benson 1950, Ferocac-tus parviflorus (Clover & Jotter) N. P. Taylor 1979, Pediocactus parviflorus (Clover & Jotter) Halda 1998 Sclerocactus havasupaiensis Clover 1942, S. parviflorus subsp. havasupaiensis (Clover) Hochstatter 1995, Pediocactus parviflorus subsp. havasupaiensis (Clover) Halda 1998 Sclerocactus intermedius Peebles 1949, S. parviflorus subsp. intermedins (Peebles) K. D. Heil & J. M. Porter 1994, Pediocactus parviflorus subsp. intermedius (Peebles) Halda 1998 Sclerocactus contortus K. D. Heil 1979 Sclerocactus terrae-canyonae K. D. Heil 1979, S. parviflorus subsp. terrae-canyonae (K. D. Heil) K. D. Heil &J. M. Porter 1994, Pediocactus parviflorus subsp. terrae-canyonae (K. D. Heil) Halda 1998 Sclerocactus cloverae K. D. Hell & J. M. Porter 1994, Pediocactus cloverae (K. D. Heil & J. M. Porter) Halda 1998 Sclerocactus cloverae subsp. brackii K. D. Heil & J. M. Porter 1994, Pediocactus cloverae subsp. brackii (K. D. Heil & J. M. Porter) Halda 1998

Plants solitary or clustering. Stems depressed globose to globose to cylindrical, 5-27 cm (2-11 in) high, 4-13 cm (1.65.1 in) in diameter, with dense spines obscuring the stems. Taproot single, branching basally. Ribs 10-16, forming distinct tubercles. Central spines 4-6, lowermost one hooked and pointing downward, laterals shorter and usually not hooked, reddish to whitish, 3.8-4.5 cm (1.5-1.8 in) long. Radial spines 3-17, whitish, spreading, 1-3.5 cm (0.4-1.4 in) long. Flowers funnelform, rose to purple to yellow or white, 3-6 cm (1.2-2.4 in) long, 2-6 cm (0.8-2.4 in) in diameter. Fruits green, becoming reddish with age. Distribution: Four Corners region, encompassing parts of Utah, Arizona, Colorado, and New Mexico.

Four subspecies of Sclerocactus parviflorus are recognized. Subspecies parviflorus has purple flowers and upper central

Sclerocactus Parviflorus
Sclerocactus parviflorus subsp. terrae-canyonae

spines 1 mm wide; it occurs in the lower Navajoan Desert, primarily in southeastern Utah and northern Arizona. Subspecies havasupaiensis has whitish flowers and spines even more slender and less flattened than those of subspecies parviflorus; it occurs only in Coconino County near the Grand Canyon, northern Arizona. Subspecies intermedius has purple flowers but upper central spines to 2 mm wide; it occurs in the upper Navajoan Desert and pinyon-juniper woodland in Utah, Arizona, Colorado, and New Mexico. Subspecies terrae-canyonae has yellow flowers and narrow upper central spines; it occurs at higher elevations in pinyon-juniper woodland and sagebrush desert in northeastern Arizona and southern Utah.

Sclerocactus polyancistrus (Engelmann & Bigelow) Britton & Rose 1922 HERMIT CACTUS, MANY-HOOKED VIZNAGITA, MANY-SPINED DEVIL'S-CLAW CACTUS, MOJAVE DEVIL'S-CLAW CACTUS Echinocactuspolyancistrus Engelmann & Bigelow 1857, Pediocactus polyancistrus (Engelmann & Bigelow) Arp 1972, Ferocactus polyancistrus (Engelmann & Bigelow) N. P. Taylor 1979

Plants solitary or in clusters. Stems cylindrical, 10-40 cm (3.9-16 in) long, 5-9 cm (2-3.5 in) in diameter, with heavy spination obscuring the stems. Ribs well developed, blunt, 13-17, forming tubercles. Central spines 9-11, hooked, 3-8.5 cm (1.2-3.3 in) long, lower ones red or reddish brown, upper ones white and flat. Radial spines 10-18, flat, straight, 5-6 cm (2-2.4 in) long. Flowers funnelform, rose purple to magenta, odoriferous, 5-6 cm (2-2.4 in) long, 5 cm (2 in) in diameter. Fruits cylindrical, green, becoming tan when mature. Distribution: southeastern California and southwestern Nevada.

Sclerocactus polyancistrus

Sclerocactuspubispinus (Engelmann) L. D. Benson 1966

GREAT BASIN EAGLE-CLAW CACTUS, GREAT BASIN FISHHOOK CACTUS

Echinocactus pubispinus Engelmann 1863, Pediocactus pubispinus (Engelmann) Arp 1972, Ferocactus pubispinus (Engelmann) N. P. Taylor 1979

Plants solitary, depressed globose to cylindrical, green, 1-15 cm (0.4-5.9 in) long, 2-15 cm (0.8-5.9 in) in diameter, with spines not obscuring the stems. Ribs 13, with prominent tubercles above. Central spines 4-6, occasionally none, extremely variable, 0.5-6 cm (0.2-2.4 in) long, lower one hooked and reddish or blackish, lateral ones sometimes hooked and white to reddish brown, upper one whitish and flattened. Radial spines 6-16, white with dark tips, spreading, 0.5-3.5 cm (0.2-1.4 in) long. Flowers funnelform, creamy yellow to greenish to lavender, 2-4 cm (0.8-1.6 in) long and in diameter. Fruits cylindrical, dehiscing along two to four vertical slits. Distribution: western Utah and northeastern Nevada. Sclerocactus pubispinus is listed in Appendix I of cites.

Sclerocactus scheeri (Salm-Dyck) N. P. Taylor 1987

FISHHOOK CACTUS, ROOT CACTUS, TWISTED-RIB CACTUS Echinocactus scheeri Salm-Dyck 1850, Ancistrocactus scheeri (SalmDyck) Britton & Rose 1923, Ferocactus scheeri (Salm-Dyck) N. P. Taylor 1979, Pediocactus scheeri (Salm-Dyck) Halda 1998 Echinocactus megarhizus Rose 1909, Ancistrocactus megarhizus (Rose) Britton & Rose 1923

Plants solitary, globose to cylindrical, green to blue-green, 2.5-15 cm (1-5.9 in) long, 2.5-10 cm (1-3.9 in) in diameter, with dense spines obscuring the stems. Roots fibrous or tuberous. Ribs about 13 with tubercles arising from them. Central spines 3-4, stout, some flattened, grayish or whitish, 2-5 cm (0.8-2 in) long, lower one hooked. Radial spines 11-18,

Sclerocactus
Sclerocactus scheeri

whitish or yellowish, straight, radiating, needle-like, 0.8-1 cm (0.3-0.4 in) long. Flowers arising from areolar furrows, inconspicuous, funnelform, greenish, 2.5-3 cm (1-1.2 in) long, 1-3 cm (0.4-1.2 in) in diameter. Fruits berrylike, green. Distribution: south Texas, and northern Mexico in Nuevo León and Tamaulipas.

Sclerocactus sileri (Engelmann) K. D. Heil 8c Porter 1994

GYPSUM CACTUS, SILER'S PINCUSHION

Echinocactus sileri Engelmann 1896, Utahia sileri (Engelmann) Britton & Rose 1922, Pediocactus sileri (Engelmann) L. D. Benson 1961, Pediocactus pubispinus subsp. s//eri (Engelmann) Halda 1998

Plants usually solitary, occasionally forming clusters. Stems depressed globose to elongate cylindrical, green, 5-25 cm (2-9.8 in) high, 6-11.5 cm (2.4-4.5 in) in diameter. Spines densely covering the stems. Central spines 3-7, brownish black, becoming grayish with age, straight or curving slightly, 13-30 mm (0.5-1.2 in) long. Radial spines 11-15, white, 11-21 mm (0.4-0.8 in) long. Flowers yellow, to 22 mm (0.9 in) long, 25 mm (1 in) in diameter. Fruits 6-9 mm (0.2-0.4 in) in diameter. Distribution: a very restricted area in Coconino County, Arizona. Sclerocactus sileri (as Pediocactus sileri) is listed as endangered in the U.S. Endangered Species Act and is included (also as P. sileri) in Appendix I of cites.

Sclerocactus spinosior (Engelmann) Woodruff 8c L. D. Benson 1976

BLAINE'S PINCUSHION, DESERT VALLEY FISHHOOK CACTUS, GREAT BASIN EAGLE-CLAW CACTUS, SCHLESSER'S PINCUSHION, SPINIER DEVIL'S-CLAW CACTUS

Echinocactus whippleiv ar. spinosior Engelmann 1863, Ferocactus sp/nos/or(Engelmann) N. P. Taylor 1979, Pediocactus spinosior (Engelmann) Halda 1998

Sclerocactus
Sclerocactus sileri

Sclerocactus blaineiS. L. Welsh & K. Thorne 1985, S. spinosiorsubsp. blainei(S. L. Welsh & K. Thorne) Hochstätter 1995, Pediocactus spinosior subsp. blainei (S. L. Welsh & K. Thorne) Haida 1998 Sclerocactus schlesseri K. D. Hell & S. L. Welsh 1986, Pediocactus spinosior subsp. schlesseri (K. D. Heil & S. L. Welsh) Haida 1998

Plants usually solitary, depressed globose to somewhat elongate, 4-15 cm (1.6-5.9 in) long, 4-10 cm (1.6-3.9 in) in diameter, with fairly dense spination. Ribs 13-14, distinctly tu-berculate. Upper and lower central spines about 6, white, 1-2 sometimes hooked. Lateral central spines usually 2, whitish, flattened, 2-6 cm (0.8-2.4 in) long. Lower central spines 3, dark colored, one hooked, 2-3 cm (0.8-1.2 in) long. Radial spines 6-10, white, spreading, 1-3.5 cm (0.4-1.4 in) long. Flowers reddish purple to violet or lavender, 2-4 cm (0.8-1.6 in) long and in diameter. Distribution: southwestern Utah and Nevada.

Two subspecies of Sclerocactus spinosior are recognized. Subspecies spinosior has lower central spines that are tan to black, and one upper central and 2 lateral central spines 2-6 cm (0.8-2.4 in) long; it occurs throughout southwestern Utah. Subspecies blaineihas lower central spines that are often white, and one upper central spine, 2 lateral central spines, and one lower central spine, 3.5-5.5 cm (1.4-2.2 in) long; it occurs in Iron County, Utah, and Nye and Lincoln Counties, Nevada.

Sclerocactus uncinatus (Galeotti) N. P. Taylor 1987

BROWN-FLOWERED HEDGEHOG, CATCLAW CACTUS,TURK'S-HEAD CACTUS, TEXAS HEDGEHOG

Echinocactus uncinatus Galeotti 1848, Ferocactus uncinatus (Galeotti) Britton & Rose 1922, Hamatocactus uncinatus (Galeotti) Orcutt 1926, Echinomastus uncinatus (Galeotti) F. M. Knuth 1935, Glan-dulicactus uncinatus (Galeotti) Backeberg 1939, Ancistrocactus uncinatus (Galeotti) L. D. Benson 1969, Pediocactus uncinatus (Galeotti) Haida 1998 Echinocactus uncinatus [var.] wrightii Engelmann 1857, E. wrightii (Engelmann) Engelmann 1885, Sclerocactus uncinatus var. wrightii (Engelmann) N. P.Taylor 1987, Hamatocactus wrightii (Engelmann) Orcutt 1926, Glandulicactus wrightii (Engelmann) D. J. Ferguson 1991, Pediocactus uncinatus var. wrightii (Engelmann) Haida 1998, S. uncinatus subsp. wrightii (Engelmann) N. P. Taylor 1998 Echinocactus crassihamatus F. A. C. Weber 1896, Ferocactus crassi-hamatus (F. A. C. Weber) Britton & Rose 1922, Glandulicactus crassihamatus (F. A. C. Weber) Backeberg 1940, Hamatocactus crassihamatus (F. A. C. Weber) Buxbaum 1951, Ancistrocactus crassihamatus (F. A. C. Weber) L. D. Benson 1969, H. uncinatus subsp. crassihamatus (F. A. C. Weber) Glass 1998, Pediocactus uncinatus var. crassihamatus (F. A. C. Weber) Haida 1998, Sclerocactus uncinatus subsp. crassihamatus (F. A. C. Weber) N. P. Taylor 1998 Echinocactus mathssonii Berge ex K. Schumann 1897, Ferocactus mathssonii (Berge ex K. Schumann) N. P. Taylor 1979, Glandulicactus mathssonii (Berge ex K. Schumann) D.J. Ferguson 1991, Ancistrocactus mathssonii (Berge ex K. Schumann) Doweld 1999

Plants usually solitary, globose to cylindrical, bluish green, 18-27 cm (7.1-11 in) long, 10-12 cm (3.9-4.7 in) in diameter. Roots spindle shaped. Ribs about 13, strongly tubercu-late, undulate, with sharp furrows. Central spines 1-5, hooked and pointing upward or obliquely outward, yellow with reddish tips, 8-13 cm (3.1-5.1 in) long. Radial spines 710, upper ones flattened and light colored, lower ones hooked and purplish, 2.5-5 cm (1-2 in) long. Flowers borne from the areolar furrow, funnelform, reddish brown, 2-4 cm (0.8-1.6 in) long, 2.5-3 cm (1-1.2 in) in diameter. Distribution: west Texas south into Mexico from Chihuahua to San Luis Potosi.

Three subspecies of Sclerocactus uncinatus are recognized. Subspecies uncinatus usually has a single hooked central spine that points obliquely outward and 7-8 radials; it occurs only in Mexico. Subspecies crassihamatus has 5 central spines and 8 radials, the lowermost ones hooked; it occurs in Queretaro, Mexico. The more northern subspecies wrightii usually has a long central spine that points upward and 8-10 radials; it occurs in the United States and northern Mexico.

Sclerocactus whipplei (Engelmann & Bigelow) Britton 8c Rose 1922

devil's-claw barrel cactus, heil's devil's-claw cactus, reeve's devil's-claw cactus, rose devil's-claw cactus, whipple's devil's-claw cactus, whipple's rose-colored devil's-claw cactus, whipple's viznagita Echinocactus whipplei Engelmann & Bigelow 1857, Pediocactus whipplei (Engelmann & Bigelow) Arp 1972, Ferocactus whipplei (Engelmann & Bigelow) N. P. Taylor 1979 Sclerocactus whipplei subsp. busekii Hochstatter 1995, Pediocactus whipplei subsp. busekii (Hochstatter) Halda 1998

Plants usually solitary, depressed globose to cylindrical, 3-14 cm (1.2-5.5 in) long, 4-11 cm (1.6-4.3 in) in diameter, with dense spines covering the stems. Taproots large. Ribs 13-15, formed from tubercles that join one another. Central spines

4, whitish to purplish, 14-45 mm (0.6-1.8 in) long, lower one angled and hooked, lateral ones flattened. Radial spines 5-12, whitish, 6-24 mm (0.2-0.9 in) long. Flowers narrow funnelform, yellow, 2.2-3.2 cm (0.9-1.3 in) long, 1.5-2 cm (0.6-0.8 in) in diameter. Distribution: northwestern Arizona and southeastern Utah. Sclerocactus whipplei subsp. busekii is recognized by some. However, Heil and Porter (1994) comment that the species is extremely variable and may even hybridize with other species. It does not seem appropriate to recognize any infraspecific taxa.

Sclerocactus
Sclerocactus whipplei
Sclerocactus uncinatus subsp. wrightii Sclerocactus wrightiae

Selenicereus atropiiosus 631

Continue reading here: Sclerocactus wrightiae L D Benson 1966

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