Ferocactus hamatacanthus var. hamatacanthus

Illustrated
Synonyms: Ferocactus hamatacanthus var. crassispinus
Treatment appears in FNA Volume 4. Treatment on page 246. Mentioned on page 243, 247.

Stems ovoid or ovoid-cylindric, 10–63 × 7.5–30 cm; ribs 13–17, undulate or crenate. Spines 12–16(–28) per areole; central spines 4(–8) per areole, principal central spine terete or angled, 60–165 × (0.5–)1–1.5(–2.5) mm, hard. Flowers 5.5–8(–10) × 6.5–9.5 cm; stigma lobes 11–14. Fruits green to greenish brown or dull brownish purple, 30–50 × 25–30 mm. Seeds 1.4–1.6 mm. 2n = 22.


Phenology: Flowering summer.
Habitat: Chihuahuan desert scrub, prairies, semidesert grasslands, oak-juniper savannas, pine-oak woodlands, stony hills, bluffs, and flats, igneous and calcareous substrates
Elevation: 500-2300 m

Distribution

V4 451-distribution-map.gif

N.Mex., Tex., Mexico (Chihuahua, Coahuila, Durango, San Luis Potosí, Zacatecas).

Discussion

In Mexico, plants of Ferocactus hamatacanthus var. hamatacanthus grow much larger; our measurements pertain only to northern specimens.

Selected References

None.

Lower Taxa

None.
Allan D. Zimmerman +  and Bruce D. Parfitt +
(Muehlenpfordt) Britton & Rose +
Echinocactus hamatacanthus +
N.Mex. +, Tex. +, Mexico (Chihuahua +, Coahuila +, Durango +, San Luis Potosí +  and Zacatecas). +
500-2300 m +
Chihuahuan desert scrub, prairies, semidesert grasslands, oak-juniper savannas, pine-oak woodlands, stony hills, bluffs, and flats, igneous and calcareous substrates +
Flowering summer. +
Illustrated +
Ferocactus hamatacanthus var. crassispinus +
Ferocactus hamatacanthus var. hamatacanthus +
Ferocactus hamatacanthus +
variety +