Flora of North America species comparison

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

ovoid to oblong, (3–)4–18 mm diam., (fleshy, deeply underground).

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

erect, unbranched, 1–3 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.

simple, 1.2–2.3 cm;

petiole 6.7–19.5 cm;

blade orbicular to reniform, or cordate to broadly ovate, 2.7–5.5 cm × 30–68 mm, base cordate to subtruncate, margins with obtuse teeth terminating in apiculae.

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.

2–5, (crowded distally), simple;

petiole 0.3–2.6 cm, base not auriculate;

blade similar to basal, 1.8–5.5 cm × 12–47mm, base cuneate or obtuse to subcordate, marginal teeth apiculate.

ebracteate.

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.

sepals oblong, 4–7 × 2–2.5 mm, lateral pair saccate basally;

petals usually pink or purple, rarely white, obovate to oblanceolate, 14–18 × 5–7 mm, (claw to 9 mm, apex rounded);

filaments: median pairs 7–8 mm, lateral pair 5.5–6.5 mm;

anthers oblong, ca. 1.5 mm.

divaricate, 9–17 mm.

divaricate to ascending, 7–24 mm.

linear, 0.8–1.6 cm × 0.8–1 mm;

ovules 16–22 per ovary;

style 1.2–1.8 mm.

linear, 3.2–5.4 cm × 2.2–4 mm;

ovules 10–14 per ovary;

style 4–7 mm.

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

brown, broadly ovoid, 2–2.8 × 1.8–2.5 mm.