Flora of North America species comparison

tubers fusiform.

tubers fusiform, thickened.

with glistening stipitate-glandular hairs and hirsute (hairs stiff, sparse to scattered, erect, 1–2 mm).

with glistening sessile-glandular hairs and ± matted-pubescent to villous and hirsute (hairs scattered, erect, stiff, 2–3 mm).

mid cauline stipules ± falcate to ± 1/2-ovate, margins often deeply incised;

major leaflets 3–11 (mid cauline 5–7), minor 0–1(–2) pairs;

major leaflet blades obovate to broadly elliptic to elliptic, terminal largest, largest of these 3.4–10.5 × 1.7–5.6 cm, margins serrate, apex acute to obtuse, abaxial surface glistening with sessile-glandular hairs (often shining) and hirsute (hairs sparse to scattered, 1 mm).

mid cauline stipules ± falcate, margins dentate;

major leaflets 3–15 (mid cauline 9), minor 1–3 pairs;

major leaflet blades ± obovate, terminal largest, largest of these 2.3–4.1 × 1–1.7 cm, margins incised, apex obtuse to acute, abaxial surfaces glistening with sessile-glandular hairs and pubescent to villous and sparsely hirsute (hairs stiff, 2 mm).

axes glistening with sessile-glandular hairs and ± ascending-hirsute (hairs stiff, sparse to scattered, 0.5–1 mm).

axes often with glistening sessile-glandular hairs and pubescent to villous and hirsute (hairs stiff, erect, 2 mm).

± alternate.

usually ± alternate.

hypanthia hemispheric, 1–3.1 × 1.8–3.9 mm, obscurely sulcate, hooked bristles in 2–3 circumferential rows, proximal row spreading to ± 90°, usually glistening with sessile-glandular hairs.

hypanthia hemispheric to turbinate, 1.5–2.7 × 1.8–3.3 mm, obscurely sulcate, hooked bristles in 3–4 circumferential rows, proximal row spreading 45–90°, glistening with sessile-glandular hairs (often yellow).