Flora of North America species comparison

(relatively short), 2–3 mm diam., (covered with extensive root system).

erect to ascending, unbranched or branched distally, 0.9–4 dm.

usually 3-foliolate, rarely simple, 1–8 cm, leaflets petiolulate or subsessile;

petiole 0.5–5 cm;

lateral leaflets subsessile, often minute;

terminal leaflet (petiolule 0.4–2 cm), blade orbicular to broadly ovate, 0.5–3 cm × 5–25 mm, base rounded, margins entire, repand, or dentate.

5–10, petiolate;

middle leaves often simple, petiole 0.3–1.5 cm, blade rhombic to suborbicular or ovate, 1–3.5 cm × 6–22 mm, base obtuse to cuneate, margins entire, repand, or dentate;

distal ones with shorter petiole, blade smaller.

ebracteate.

sepals (ascending), oblong, 1.5–2.2 × 0.7–1 mm, lateral pair not saccate basally;

petals (somewhat spreading), white, oblanceolate, 3.5–5 × 1.2–1.8 mm, (not clawed, apex rounded);

filaments: median pairs 2.5–3 mm, lateral pair 2–2.5 mm;

anthers ovate, ca. 0.2 mm.

divaricate, 9–17 mm.

linear, 0.8–1.6 cm × 0.8–1 mm;

ovules 16–22 per ovary;

style 1.2–1.8 mm.

brown, oblong to ovoid, 0.9–1.2 × 0.6–0.8 mm.