Isotype of Erigeron acomanusR. Spellenberg & Knight [family ASTERACEAE ] (stored under name); Verified by S. Whitcomb, 2009
Related name
Erigeron acomanus
Common name
Acoma fleabane, Flora of North America Vol. 20
Flora
Entry for Erigeron acomanus Spellenberg & P. J. Knight [family COMPOSITAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 20,
Names
Erigeron acomanusSpellenberg & P. J. Knight [family COMPOSITAE], Madroño, 36: 115, figs. 2. 1989
Treatment Author(s)
Guy L. Nesom
Information
Perennials, 4.5–15 cm; taprooted, forming mats (10–70 cm diam.) connected by systems of lignescent rhizomes and caudex branches. Stems erect (grayish), sparsely strigillose (hairs whitish, stiff), eglandular. Leaves mostly basal (persistent, spreading or ascending, in rosettes at ends of caudex branches); (grayish) blades oblanceolate to narrowly obovate or spatulate, 8–23 × 2–7 mm, much reduced distally, margins entire (apices rounded to obtuse), faces moderately strigillose, eglandular. Heads 1. Involucres ca. 5 × 7–10 mm. Phyllaries in 3–4 series, lightly to moderately white-strigose, minutely glandular. Ray florets 16–30; corollas white, 4.5–9 mm, laminae not coiling or reflexing, spreading. Disc corollas 2.5–3 mm. Cypselae 1.8–2 mm, 2-nerved, faces sparsely strigoso-hirsute; pappi: outer of setae, inner of 20–25 bristles. 2n = 18.
