Flora of North America species comparison

(unsegmented), cylindrical, 2–10 mm diam., (somewhat uniform, fleshy, not fragile, with dentate leaf scars).

swollen, compact at stem base, (fleshy, stolons many, slender, ca. 1 mm diam., pubescent or glabrous).

erect, unbranched, (1.2–)1.5–3.5(–4) dm, rarely sparsely pubescent distally.

erect, usually unbranched, rarely branched distally, 1–2.5 dm, sparsely to densely hirsute or pilose proximally, sparsely so or glabrous distally.

3-foliolate, (5.5–)8–22(–26) cm, leaflets petiolulate or subsessile;

petiole (3–)4.5–16(–20) cm;

lateral leaflets subsessile or petiolulate, blade often similar to terminal, base sometimes oblique;

terminal leaflet (petiolule 0.5–1.2 cm), blade ovate-elliptic to broadly ovate, (2–)3.5–8(–10) cm × (5–)20–65(–80) mm, base cuneate to obtuse, margins coarsely crenate or dentate, (surfaces puberulent, trichomes to 0.1 mm).

usually simple, rarely 3-foliolate, (3–)6–16 cm, leaflets petiolulate or subsessile;

petiole (1.5–)4–13 cm;

lateral leaflets subsessile or petiolulate (to 0.5 cm), blade similar to terminal, much smaller;

terminal leaflet (petiolule 0.5–2 cm), blade orbicular to reniform or broadly ovate, (1–)1.5–4.5 cm, base cordate, margins repand to coarsely crenate, (apiculate at vein endings, surfaces sparsely pubescent or glabrous).

2 (or 3) [(sub)opposite], 3-foliolate, (similar to rhizomal leaves), petiolate, leaflets petiolulate or subsessile;

petiole (1–)2–4.5 cm, base not auriculate;

lateral leaflets similar to terminal;

terminal leaflet subsessile or petiolulate (0.2–1 cm), blade broadly elliptic to ovate, (2–)4–8(–10) cm × 10–50 mm, margins coarsely dentate or crenate, (margins minutely puberulent).

2–5, 3 or 5-foliolate, petiolate, leaflets petiolulate or subsessile;

petiole 0.8–5 cm, base not auriculate;

lateral leaflets sessile or petiolulate (to 0.5 cm), blade similar to terminal, smaller;

terminal leaflet petiolulate (0.5–1.5 cm), blade broadly ovate to suborbicular, 1.5–4(–5) cm × 12–35 mm, margins repand to coarsely crenate or slightly lobed, (apiculate at vein endings, margins glabrous).

ebracteate.

ebracteate.

sepals oblong, (4–)5–8 × 2–3 mm, lateral pair slightly saccate basally;

petals white or pink to purple, obovate to oblanceolate, (7–)9–15(–17) × (3–)4–7 mm, (short-clawed, apex rounded);

filaments: median pairs 5–8 mm, lateral pair 3.5–6 mm;

anthers linear to oblong, 2.5–3 mm.

sepals (ascending) oblong, 3–3.5 × 1–1.5 mm, lateral pair not saccate basally;

petals white, oblanceolate, 5–6.5(–8) × 1.5–2.5 mm, (not clawed, apex obtuse to subemarginate);

filaments: median pairs 3.5–5 mm, lateral pair 2.5–3 mm;

anthers oblong, 1.2–1.6 mm.

ascending to divaricate, (10–)15–30(–36) mm.

ascending to divaricate-ascending, 7–20 mm.

linear-lanceolate, 1.5–4 cm × 1.5–2.5 mm;

ovules 10–14 per ovary;

style 4–8(–10) mm.

linear, 1.5–2.5 cm × 1–1.2 mm;

ovules 10–14 per ovary;

style 1.2–2.5 mm.

(rarely produced) brown, oblong, 2–2.2 × 1.2–1.5 mm (cotyledons incumbent).

brown, oblong, 1.2–1.7 × 0.8–1.1 mm.

= 96.