Trachymene cyanopetala

Ascending to erect, glabrescent annual to 15 cm high. Leaves basal and cauline, ternately dissected, lobes oblong to narrow-cuneate, 5–15 mm long, sometimes again lobed or toothed; petioles subequal to lamina, ciliate at their sheathing bases. Umbels (1–)few-numerous, usually cymosely arranged, 3–6-flowered; peduncle 5–15 mm long (to 30 mm in fruit); involucral bracts 4 or 5, ovate to obovate, 1.5–3 mm long, ciliate; pedicels shorter than bracts (slightly exceeding bracts in fruit). Petals obovate, 0.5–1 mm long, blue; stamens subequal to petals; styles c. 0.3 mm long. Mericarps c. 3 mm long, 2 mm wide (excluding hairs), hirsute to villous with (usually) purplish hairs, both of each pair equally developed. Flowers Aug.–Oct.