Difference between revisions of "Erigeron corymbosus"
Trans. Amer. Philos. Soc., n. s. 7: 308. 1840.
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|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Erigeron | |genus=Erigeron | ||
Revision as of 20:29, 16 December 2019
Perennials, 10–50 cm; taprooted, caudices usually with relatively slender and short, often woody branches. Stems ascending (often purplish proximally), hirsutulous (hairs spreading-deflexed), eglandular. Leaves basal (usually persistent) and cauline; basal blades linear-oblanceolate, (30–)60–160 × 3–8(–14) mm, cauline 3-nerved, gradually or little reduced distally (bases attenuate), margins entire (apices acute), faces hirsutulous, eglandular. Heads 1–10(–16) in loosely corymbiform arrays (on branches from distal 1/2 of stems, often well beyond middle). Involucres 5–7 × 7–13 mm. Phyllaries in 2–3 series, flat, densely hirsute to hirsuto-villous, sometimes sparsely minutely glandular. Ray florets 35–65; corollas blue or less commonly pink, 7–13 mm, laminae coiling at apices. Disc corollas 4–5.3 mm. Cypselae 2–2.5 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 20–30 bristles. 2n = 18.
Phenology: Flowering Jun–Aug.
Habitat: Open slopes, grassland, sagebrush, rabbitbrush, openings in ponderosa pine
Elevation: 400–2200 m
Distribution
B.C., Idaho, Mont., Oreg., Utah, Wash., Wyo.
Discussion
Selected References
None.