Sida neomexicana
Proc. Amer. Acad. Arts 22: 296. 1887.
Herbs or subshrubs, perennial, usually less than 0.5 m, freely branching from base. Stems erect, stellate-puberulent. Leaves: stipules free from petiole, 1-veined, linear to falcate, 5–7 mm, 1/2–1 times length of petiole; petiole 2–10 mm, to 1/4 length of blade, obscurely puberulent; blade narrowly oblong-lanceolate, 2–4.5 cm, 6–15 times longer than wide, base truncate, margins dentate to base, apex acute, surfaces sparsely hairy abaxially, glabrous adaxially. Inflorescences axillary, solitary flowers, usually congested apically. Pedicels usually to 1 cm, subequal to calyx, much shorter than subtending leaf. Flowers: calyx ribbed, 6–7 mm, minutely hairy, lobes triangular; petals yellow-orange to reddish, sometimes drying lavender, 10–12 mm; style 10–12-branched. Schizocarps oblate, 6–7 mm diam., apically puberulent; mericarps 10–12, 3 mm, obscurely reticulate laterally, apex muticous. 2n = ca. 14.
Phenology: Flowering late summer.
Habitat: Open, arid habitats
Elevation: 400–2400 m
Distribution
Ariz., N.Mex., Tex., Mexico (Chihuahua), Mexico (Coahuila), Mexico (Durango)
Discussion
Sida neomexicana resembles S. ciliaris in several respects, especially in the congested terminal inflorescences resulting from shorter internodes.
Selected References
None.
Lower Taxa
"lengthofblade" is not declared as a valid unit of measurement for this property."/2-1timeslengthofpetiole" is not declared as a valid unit of measurement for this property.