Sideroxylon lanuginosum subsp. rigidum

(A. Gray) T. D. Pennington

in Organizaton for Flora Neotropica, Fl. Neotrop. 52: 169. 1990,.

Basionym: Bumelia lanuginosa var. rigida A. Gray in A. Gray et al., Syn. Fl. N. Amer. ed. 2, 2(1): 68. 1886
Synonyms: Bumelia lanuginosa subsp. rigida (A. Gray) Cronquist Bumelia lanuginosa subsp. texana (Buckley) A. E. Murray Bumelia lanuginosa var. texana (Buckley) Cronquist Bumelia texana Sideroxylon lanuginosum var. rigidum (A. Gray) B. L. Turner
Treatment appears in FNA Volume 8. Treatment on page 240. Mentioned on page 239.

Leaves: petiole hairy to glabrate, hairs white to gray; blade dull adaxially, 15–50 mm, abaxial surface densely to sparsely villous or glabrate, hairs white to gray.

Phenology: Flowering Jun–Jul.
Habitat: Upland forests, woodlands, scrublands
Elevation: 400-2000 m


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Ariz., N.Mex., Okla., Tex., Mexico (Coahuila, Nuevo León, Tamaulipas).


Subspecies rigidum occurs in the southwestern portion of the range and has leaf indument ranging from tomentose to glabrate. Variation patterns are especially complex in southern and western Texas and in northern Mexico.

Selected References


Lower Taxa

Wayne J. Elisens +  and J. Matthew Jones +
(A. Gray) T. D. Pennington +
Bumelia lanuginosa var. rigida +
Ariz. +, N.Mex. +, Okla. +, Tex. +, Mexico (Coahuila +, Nuevo León +  and Tamaulipas). +
400-2000 m +
Upland forests, woodlands, scrublands +
Flowering Jun–Jul. +
in Organizaton for Flora Neotropica, Fl. Neotrop. +
Bumelia lanuginosa subsp. rigida +, Bumelia lanuginosa subsp. texana +, Bumelia lanuginosa var. texana +, Bumelia texana +  and Sideroxylon lanuginosum var. rigidum +
Sideroxylon lanuginosum subsp. rigidum +
Sideroxylon lanuginosum +
subspecies +