Pediocactus paradinei

B. W. Benson

Cact. Succ. J. (Los Angeles) 29: 136, figs 83, 84. 1957.

Common names: Houserock cactus park hedgehog cactus
EndemicConservation concern
Synonyms: Pediocactus simpsonii var. paradinei (B. W. Benson) Halda Pilocanthus paradinei (B. W. Benson) B. W. Benson & Backeberg
Treatment appears in FNA Volume 4. Mentioned on page 214.

Plants unbranched. Stems subglobose to globose, 3–7.5 × 2.5–5.5(–8) cm; areoles circular to oval, villous. Spines smooth, thin and flexible, sometimes distinguishable as radial and central; radial spines 13–22 per areole, straight or curving irregularly, white, 20–25 × 0.2–0.3 mm; central spines 3–6 per areole, dense in mature plants, white to pale gray, straight, flexible, hairlike, 8–35 × 0.3 mm. Flowers 1.5–2.2 × 1.9–2.5 cm; scales and outer tepals minutely toothed or denticulate or entire and undulate; outer tepals brown midstripes with pale or white margins, oblanceolate, 8–20 × 3–6 mm; inner tepals light yellow to pink, oblanceolate, 15–20 × 4–6 mm. Fruits greenish yellow maturing to reddish brown, cylindric, 7–10 × 5–8 mm. Seeds black, 2.5 × 2 mm, papillate but not rugose.


Phenology: Flowering spring.
Habitat: Gravelly limestone soils of pinyon-juniper, ponderosa pine, and grama grass communities
Elevation: 1500-2100 m

Distribution

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Ariz.

Discussion

Of conservation concern.

Pediocactus paradinei is endemic to the Kaibab Plateau region of northern Arizona.

Selected References

None.

Lower Taxa

None.
... more about "Pediocactus paradinei"
Kenneth D. Heil +  and J. Mark Porter +
B. W. Benson +
Houserock cactus +  and park hedgehog cactus +
1500-2100 m +
Gravelly limestone soils of pinyon-juniper, ponderosa pine, and grama grass communities +
Flowering spring. +
Cact. Succ. J. - Los Angeles +
Endemic +  and Conservation concern +
Pediocactus simpsonii var. paradinei +  and Pilocanthus paradinei +
Pediocactus paradinei +
Pediocactus +
species +