Rocky Mountain ankle-aster

Aster stenomeres A. Gray, Proc. Amer. Acad. Arts 17: 209. 1882

Plants 12–30 cm (sometimes weakly cespitose, caudices multicipital or with relatively short branches; rhizomes fibrous-rooted, thickened, becoming woody). Stems proximally herbaceous or slightly woody, eglandular. Leaves: proximal separated by evident internodes, spatulate, reduced in size distally; mid and distal linear-lanceolate, 15–25(–30) mm, margins green, faces hispidulous. Heads borne singly. Involucres 8–13 mm. Disc florets bisexual, fertile; corollas 7.5–8.5 mm. Cypselae 5–6 mm, faces sessile- to stipitate-glandular.

Flowering Jun–Sep. Dry slopes, grassy ridges, and openings; 1700–2200 m; B.C.; Idaho, Mont., Wash.