Flora of North America species comparison

erect or ascending, usually flexuous and abruptly angled distal to each node, hirsute or hirsutulous.

prostrate or diffuse, 1–6+ cm underground, minutely strigulose.

3–10(–11) cm;

stipules lanceolate-attenuate, (1.5–)2.5–8(–9) mm, herbaceous, sometimes papery at proximal nodes;

leaflet blades obovate to elliptic, (3–)5–19 mm, apex acute to obtuse or retuse, surfaces pubescent abaxially, sometimes glabrous adaxially.

1–6.5 cm;

stipules connate-sheathing at least at proximal nodes, often becoming anthocyanic and somewhat enlarged at distal nodes, 3–6 mm, thinly herbaceous becoming papery;

leaflet blades elliptic to oblong, 1.5–8 mm, apex obtuse to retuse, surfaces strigulose, sometimes glabrous or glabrate adaxially.

10–25-flowered;

axis (1–)2–5 cm in fruit;

bracts (2.5–)4–12 mm;

bracteoles 0–2.

1–5-flowered;

axis 1–3 cm in fruit;

bracts 1.5–4.5 mm;

bracteoles 0.

erect, 1.5–5.5 cm.

ascending, (2.5–)3–10 cm.

0.5–2.3 mm.

1.8–4 mm.

12–15.3 mm;

calyx 9.5–13 mm, hirsute to hirsutulous, tube 7–8.6 mm, lobes subulate to linear-subulate, 2.5–5.5 mm;

corolla bicolored, keel tip maculate.

12–20 mm;

calyx 6–6.7 mm, black-strigose to glabrate, tube 3–4.7 mm, lobes triangular-acuminate to linear, 1–2.5 mm;

corolla keel 11.2–13.7 mm.

stramineous, incurved, (20–)25–40 × (4–)5–7(–8) mm, thin becoming papery, glabrous.

pale green with purple dots, curved in 0.5–1 spiral, laterally compressed, 30–50 × 50–75 mm, papery-membranous, semitransparent, minutely strigose;

gynophore 4–10 mm.

= 24.

= 22.