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Vegetation and Flora of the Sonoran Desert, Volume 1
Forrest Shreve,Ira Loren Wiggins
Limited preview - 1964
5-lobed Acad achenes acuminate Amer anthers anthesis areoles Arizona arroyos ascending axillary axils Baja California basal base beneath Bowers branches bristles broad broadly ovate brown brownish Calif calyx lobes campanulate canyons capsule carpels Colorado Desert Contr corolla tube County cuneate cymes densely dentate diameter entire erect exserted filaments fruit funnelform glabrate glabrous glandular globose glochids Gray green greenish hairs herbage hillsides hirsute hispid hypanthium inflorescence involucral bracts lanceolate leaf blades leaves linear long at anthesis Lower Sonoran Zone margins minutely narrowly nearly nutlets oblanceolate oblong obovate obtuse Ovary ovoid pale panicles pappus pedicels peduncles perianth perianth segments petals petioles Pima County pistillate plant Proc pubescent purplish reddish rocky rounded seeds sepals sessile shallowly shorter shrub slightly slopes solitary Sonoran Desert south southern Baja California sparsely puberulent spreading stamens stems stigma style subsp subulate tall tips Tropical Zones U.S. Nat Upper Sonoran Zones usually wide yellow yellowish