Flora of North America species comparison

cylindrical, 3–6 mm diam., (distinctly constricted at intervals, non-uniform diam., fleshy, slightly fragile, with dentate leaf scars).

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

erect, unbranched, 0.9–3(–4) dm.

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

3-foliolate, 7–20 cm, leaflets petiolulate or subsessile;

petiole 4–15 cm;

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

terminal leaflet (petiolule 0.2–1(–1.7) cm), blade broadly ovate to oblong, 2–7.5 cm × 12–37 mm, base cuneate to obtuse, margins coarsely dentate to sharply incised, or deeply cleft into 2 or 3 lobes (lobes dentate or incised, margins puberulent).

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).

2 or 3, 3-foliolate, (rarely subopposite), petiolate, leaflets petiolulate or subsessile;

petiole (0.5–)1–4(–6.5) cm, base not auriculate;

lateral and terminal leaflets similar to rhizomal, distalmost sometimes much smaller.

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).

ebracteate.

ebracteate.

sepals (erect to ascending), oblong, 5–7 × 2–3 mm, lateral pair slightly saccate basally;

petals white or pink, oblanceolate, 10–17 × 3–6 mm, (not clawed, apex rounded);

filaments: median pairs 4–8 mm, lateral pair 3–6.5 mm;

anthers linear, 1.7–2.7 mm.

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.

(flowering ones) horizontal to divaricate or deflexed, 7–20 mm.

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

(undeveloped), linear-lanceolate, to 3 cm × 2 mm;

ovules 10–14 per ovary;

style 3.5–7 mm.

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

ovules 10–14 per ovary;

style 4–8(–10) mm.

not known.

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

= 120, 124, 132, 138, 156, 161, ca. 208.

= 96.