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FNA | Family List | FNA Vol. 20 | Asteraceae | Erigeron

92. Erigeron mancus Rydberg, Fl. Rocky Mts. 902, 1067. 1917.

Imperfect fleabane

Erigeron pinnatisectus (A. Gray) A. Nelson var. insolens J. F. Macbride & Payson

Perennials 2–7 cm; taprooted, caudex branches usually relatively thick, woody. Stems erect, sparsely to moderately hispidulous and minutely glandular, sometimes merely glandular. Leaves mostly basal and proximal cauline (persistent); basal blades spatulate (often folding), 12–40 × 2–4 mm, margins pinnatifid (lobes linear), faces glabrate or sometimes sparsely hirsute, usually minutely glandular; cauline mostly linear, reduced and bractlike, margins entire, usually coarsely ciliate. Heads (discoid) 1. Involucres 5–6.5 × 7–12 mm. Phyllaries in 3–5 series, hirsuto-villous, minutely glandular. Ray (pistillate) florets 0. Disc corollas 3.8–4.5 mm. Cypselae ca. 2.2 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 20–30 bristles.

Flowering Jun–Jul. Rocky slopes, boulder fields, ridge tops, alpine meadows, openings in subalpine fir; of conservation concern; 3000–3800 m; Utah.


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