Phacelia tanacetifolia

Annual to 1.2 m high, hispidulous or scabrous; stems branching or simple. Basal leaves 6–20 cm long, 3–15 cm wide; lamina oblong-elliptic to ovate in outline, pinnate, petiolate; pinnae oblong or lanceolate, pinnatifid or incised; cauline leaves petiolate or sessile. Inflorescence densely short pubescent and hispid; flowers shortly pedicellate; calyx-lobes linear to linear-lanceolate, 4–6 mm long, equal, scarcely enlarged in fruit, densely pubescent and hispid, acute, margins entire; corolla broadly campanulate, 7–10 mm long, bluish purple, eventually deciduous; corolla-scales present, adnate to corolla-tube without free tips or lobes; stamens exserted, 9–14 mm long, filaments glabrous; style deeply cleft. Capsule broadly ovoid, 3–4 mm long, hispidulous at apex; seeds usually 2, oblong, convex on outer surface, flattened on inner, 2–3 mm long, deeply and coarsely pitted in transverse rows. Flowers late winter–summer.