Notes: Spellenberg SIDA 19(3) 539-570
[Hesperonia aspera (Greene) Standl., more]
Stems few-many, when few often sprawling, when many often forming dense clumps, moderately to densely villous or viscid-villous, increasingly dense and viscid distally. Leaf blades 0.5-4 × 1-3.7 cm. Inflorescences cymose, usually broad; branches ± equal throughout; involucres 5-7 mm; bracts 60-70% connate, lobes ovate-triangular or ovate-oblong, base often 70-100% of height, apex obtuse or acute. Flowers: perianth usually white, sometimes pink or magenta or tinged with pink at base. Fruits gray-brown, dark charcoal brown, or olive, often dark mottled, often faintly marked with 10 paler longitudinal lines, ellipsoid, obovoid, or almost spheric, 4-6 × 2.4-4 mm. 2n = 60. Flowering ± year-round, most vigorously in spring. Rocky slopes, desert brushlands; -40-2200 m; Ariz., Calif., Nev., Utah; Mexico (Baja California, Sonora).
Citation: The vPlants Project. vPlants: A Virtual Herbarium of the Chicago Region. http://www.vplants.org
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