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Wildflowers of Southern Arizona
Aster (Asteraceae) family.
Subshrubs, 6-36 cm (in rock crevices. Stems relatively many, erect or pendulous, very leafy); sparsely to densely grayish hairy. Leaves: petioles 2-8(-12) mm; blades pedately 3-lobed (lobes spatulate or linear), or 2-3-pinnatifid (lobes linear-filiform), 4-30 × 4-20 mm, ultimate margins entire. Heads (2-5) in corymbiform arrays, 5-6.5 × 5-6 mm. Peduncles 7-15 mm. Involucres campanulate. Phyllaries 2-16, linear-lanceolate to narrow-ovate, 3.5-5 × 0.5-1.5 mm. Ray florets 8-12; corollas white, laminae broadly oblong or oblong-elliptic to subspatulate, 3-7 × 2-3 mm. Disc florets 30-40; corollas yellow, often purple tinged, tubes 0.8-1 mm, throats tubular, tubular-funnelform, or tubular-campanulate, 1-1.3 mm, lobes 0.3-0.4 mm. Cypselae linear-oblong to narrowly oblanceolate, 1.8-2.5 mm, margins usually prominently calloused, sometimes thin, usually ciliate; pappi of 2(-3+) barbellulate bristles 1.5-2.5 mm plus crowns of hyaline, laciniate scales.
Santa Catalina Mountains
Location: In crevice of Inspiration Rock.
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