Erigeron acomanus R. Spellenberg & P. Knight

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.

Erigeron acomanus is a rare North American species of flowering plant in the family Asteraceae known by the common names bluewater fleabane and Acoma fleabane. It has been found only in sandstone soils in west-central New Mexico.

Erigeron acomanus là một loài thực vật có hoa trong họ Cúc. Loài này được Spellenb. & P.Knight mô tả khoa học đầu tiên năm 1989.