Elmer's Erigeron

Perennials, 6–20 cm; apparently taprooted (often not evident or not collected), rhizomes relatively slender, woody fibrous-rooted or rhizomelike caudex branches. Stems prostrate to decumbent-trailing, less commonly ascending-erect (without axillary leaf tufts), sparsely to moderately strigose, eglandular. Leaves cauline; blades narrowly lanceolate to oblong, 5–20 × 1–2 mm, relatively even-sized, margins entire, faces strigose, eglandular. Heads 1 or 2–3. Involucres 3.5–5 × 7–10 mm. Phyllaries in 3–5 series (often purple-tipped; margins of inner narrowly scarious), glabrous, minutely glandular. Ray florets 12–21; corollas white, drying bluish, 5–6 mm, laminae coiling. Disc corollas 3.5–4 mm (throats slightly indurate, not inflated). Cypselae 1.6–2.5 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 18–26 bristles.

Aster elmeri Greene, Pittonia 2: 170. 1891; Erigeron breweri A. Gray var. elmeri (Greene) Jepson

Erigeron elmeri is a North American species of flowering plants in the family Asteraceae known by the common names Elmer's fleabane and Elmer's erigeron.

Erigeron elmeri has been found only in California in the western United States. It grows at high elevations in the Sierra Nevada from Mono and Tuolumne Counties south to Tulare County.

Erigeron elmeri is a perennial herb up to 20 centimeters (8 inches) in height. It produces 1-3 flower heads per stem, each head as many as 21 white ray florets surrounding numerous yellow disc florets.