Koeberlinia spinosa var. wivaggii

W. C. Holmes

Brittonia 60: 180, figs. 2D, 4. 2008.

Treatment appears in FNA Volume 7. Treatment on page 185.

Plants 1–3 m; young thorns densely puberulent; mature thorns 20–60 mm, 2–3.4 mm at base (15 or less times longer than base width). Flowers: petals ca. 3 mm; style 0.4–0.7 mm, straight (sometimes slightly curved when dry); gynophore (stipe) 0.3–0.5 mm.


Phenology: Flowering Jun–Jul.
Habitat: Desert flats, hillsides, arroyos
Elevation: 100-2100

Distribution

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Ariz., N.Mex., Tex., Mexico (Chihuahua, Coahuila, Durango, Nuevo León, San Luis Potosí, Sonora, Zacatecas).

Discussion

Variety wivaggii is primarily a taxon of the Chihuahuan Desert, occurring in a region between the more easterly var. spinosa and the more westerly var. tenuispina.

Selected References

None.

Lower Taxa

None.
Gordon C. Tucker +
W. C. Holmes +
Ariz. +, N.Mex. +, Tex. +, Mexico (Chihuahua +, Coahuila +, Durango +, Nuevo León +, San Luis Potosí +, Sonora +  and Zacatecas). +
100-2100 +
Desert flats, hillsides, arroyos +
Flowering Jun–Jul. +
Illustrated +
Koeberlinia spinosa var. wivaggii +
Koeberlinia spinosa +
variety +