Flora of North America species comparison

± erect or spreading, usually branched from base, 2–20(–30) cm.

6–16 mm;

stipules overlapping, 4–10 mm, divided 1/3–1/2 their length, lobes 8–12, on distal nodes ± triangular, length 1–2(–4) times as long as width;

petiole free from stipules in proximal and distal leaves;

blade 4–10 mm, divided into 3–4 segments, each segment 3–4(–5)-lobed.

opposing leaves, dense, flowers not completely hidden.

less than 1 mm.

1.3–1.8 × 0.8–1 mm, 1.5–2.5 mm in fruit;

epicalyx bractlets 0–0.1 mm;

hypanthium ovoid to ellipsoid, contracted at apex, 8-ribbed, spreading-erect hairy in proximal 2/3, glabrescent in distal 1/3;

sepals ± spreading to erect, 0.4–0.7 mm, long-ciliate.

(1.6–)1.8–2.3(–2.5) mm.

= 48.