Erigeron sivinskii G. L. Nesom

Perennials, 5–8 cm; taprooted, caudex branches relatively short, thick, retaining old leaf bases. Stems erect (greenish), closely strigose (hairs white, equal), eglan-dular. Leaves basal (persistent, persistent portions relatively short and broad) and cauline (petioles erect, greenish, bases broadened or not, not thickened and whitish-indurate); blades linear, 12–30 × 0.5–0.8 mm, cauline unreduced for ± ¹ / 2 stems, margins entire, eciliate, faces sparsely strigose, eglandular. Heads 1. Involucres 5–6 × (8–)10–14 mm. Phyllaries in 2–3 series (greenish, relatively thinly herbaceous), sparsely hirsuto-pilose along midribs, minutely glandular. Ray florets 21–33; corollas white, with abaxial lilac midstripe, 7–9 mm, laminae coiling. Disc corollas 3–3.8 mm. Cypselae (narrowly oblong) 2.8–3.1 mm, 2(–3)–nerved, margins sparsely ciliate, faces glabrous; pappi: outer of setae, inner of 21–27 bristles.

Erigeron sivinskii is a North American species of flowering plant in the family Asteraceae known by the common name Sivinski's fleabane.. It has been found in the southwestern United States, in the states of Arizona and New Mexico.

The species is named for botanist and forester Robert C. Sivinski.

Erigeron sivinskii grows on red clay and shale slopes in desert scrub and open pinyon-juniper woodland. It is a small perennial herb rarely more than 8 cm (3.2 inches) tall. The inflorescence generally contains only one flower heads per stem. Each head contains 21–33 ray florets each ray white with a lilac stripe down the middle. These surround many yellow disc florets.

Erigeron sivinskii là một loài thực vật có hoa trong họ Cúc. Loài này được G.L.Nesom mô tả khoa học đầu tiên năm 1992.