Sierra Ancha fleabane
Perennials 7-22 cm; taprooted, caudex branches relatively thick, short, retaining old leaf bases). Stems ascending to somewhat pendent, sparsely strigose to glabrate, eglandular . Leaves basal (persistent) and cauline (petioles about 2 times blade lengths); basal blades obovate-spatulate, (30-)40-90 × 3-8 mm, margins entire or with 1(-2) pairs of deep lobes or teeth, faces sparsely ascending-strigose to glabrate, eglandular; cauline blades oblanceolate at midstem, only slightly reduced distally. Heads 1-3 (from distal branches). Involucres 3-3.5 × 5-7 mm. Phyllaries in 3-4 series, (purplish, midveins orange-resinous, slightly swollen) glabrous or sparsely strigose, sometimes sparsely minutely glandular. Ray florets 14-36; corollas white, drying white to lavender, 6-8 mm, laminae reflexing. Disc corollas 2-2.8 mm (veins prominently orange-resinous). Cypselae 1.2-1.4 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae or scales, inner of 19-26 bristles. 2n = 18. Flowering (Apr-)Jun-Nov. Cliff crevices, ledges, soil pockets among boulders; of conservation concern; 1100-2100 m; Ariz.
This project made possible by National Science Foundation Award 1410069