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

95. Erigeron klamathensis (G. L. Nesom) G. L. Nesom, Sida. 21: 20. 2004.

Klamath fleabane

Erigeron breweri A. Gray var. klamathensis G. L. Nesom, Phytologia 72: 174. 1992

Perennials, 6–15(–20) cm; taprooted, caudices or roots relatively thick, sometimes branched, woody, often producing slender, lignescent offsets. Stems ascending-erect, hispidulous to piloso-hirsute (hairs straight, spreading, 0.2–1 mm), eglandular. Leaves cauline; (ascending) blades narrowly oblong-lanceolate to narrowly obovate, 20–40 × 2–5 mm, relatively evenly spaced and sized, margins entire, faces piloso-hirsute, eglandular. Heads 1–5. Involucres (3–)3.5–4.5(–5) × 7–10 mm. Phyllaries in 2–3(–4) series (inner: margins white, broad, thickened, without green apical area), sparsely hairy or glabrous, densely minutely glandular. Ray florets 22–40; corollas lavender to purple, 8–10 mm, laminae weakly coiling. Disc corollas (3.5–)4–5 mm. Cypselae 1.8–2.5 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 18–23 bristles.

Flowering Jun–Sep. Outcrops, ridges, crevices, rocky slopes, over shale, granite, serpentine, peridotite, chaparral, oak-pine, fir-oak, mixed evergreen woodlands; (400–)700–2200 m; Calif., Oreg.


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