Cylindropuntia acanthocarpa var. thornberi

(Thornber & Bonker) Backeberg

Cactaceae 1: 184. 1958.

Common names: Thornber cholla
Basionym: Opuntia thornberi Thornber & Bonker Fantast. Clan, 133, 135 (fig.), 148. 1932
Synonyms: Opuntia acanthocarpa var. thornberi (Thornber & Bonker) L. D. Benson
Treatment appears in FNA Volume 4. Treatment on page 117. Mentioned on page 103, 116.
Revision as of 22:22, 16 December 2019 by FNA>Volume Importer

Shrubs, with few to many branches, at acute and obtuse angles. Stem segments gray-green, 10–25(–50) cm; tubercles very prominent and broad, 2.5–4.5 cm. Spines 6–11(–14) per areole, rarely interlacing with spines of adjacent areoles, yellow to deep red-brown, aging gray, not baggy sheathed; major abaxial spines usually deflexed and spreading. Flowers: inner tepals yellow to bronze. Fruits bearing few spines, sometimes spineless; areoles 12–20. 2n = 22.


Phenology: Flowering mid-late spring (Apr–Jun).
Habitat: Sonoran and Mojave deserts, desert grasslands, chaparral transition areas, rocky hills, ridges
Elevation: 600-1500 m

Discussion

Selected References

None.

Lower Taxa

None.
Donald J. Pinkava +
(Thornber & Bonker) Backeberg +
Opuntia thornberi +
Thornber cholla +
600-1500 m +
Sonoran and Mojave deserts, desert grasslands, chaparral transition areas, rocky hills, ridges +
Flowering mid-late spring (Apr–Jun). +
Illustrated +
Opuntia acanthocarpa var. thornberi +
Cylindropuntia acanthocarpa var. thornberi +
Cylindropuntia acanthocarpa +
variety +