Flora of North America species comparison

erect or ascending, current season stems 3–10 cm underground, strigulose or villosulous.

erect or ascending, finely strigulose.

3–8 cm;

stipules 1–3 mm, scarious at proximal nodes, herbaceous at distal nodes;

leaflet blades obovate-cuneate, 4–12 mm, apex obtuse, retuse, or obcordate, surfaces strigulose or villosulous abaxially, strigose to glabrescent adaxially.

compound proximally, unifoliolate or reduced to phyllodia distally, sometimes unifoliolate throughout, 2.5–9 cm;

stipules connate-sheathing and papery-scarious at proximal nodes, connate or distinct and herbaceous with scarious margins becoming papery at distal nodes, 1.2–7 mm;

leaflets (0 or 1–)3–9, blades linear to linear-elliptic, 10–28 mm, apex obtuse to acute, surfaces strigose;

terminal leaflet decurrent, not jointed to rachis.

9–15-flowered;

axis 3–8 cm in fruit;

bracts 1 mm;

bracteoles 0.

3–15-flowered, flowers ascending-spreading;

axis 0.5–6 cm in fruit;

bracts 1.2–2 mm;

bracteoles 1 or 2.

erect or divaricate-ascending, 1–6.5 cm.

erect, 7–21 cm.

1–1.5 mm.

1.5–3 mm.

14–17 mm;

calyx 5–6.5 mm, strigose, tube 5–6 mm, marcescent, lobes triangular, 0.5–0.9 mm;

corolla keel 12–13 mm.

18–22 mm;

calyx 6.4–9.6 mm, strigulose, tube 5.6–6.7 × 2.8–5.2 mm, lobes triangular-subulate, 0.9–2.9 mm;

corolla usually pink-purple with white wing tips, rarely white throughout;

keel 12–16 mm.

pale green sometimes mottled becoming stramineous, coiled through 1.5–2 spirals into a closed ring, 3.5–4 mm wide, scarcely fleshy becoming stiffly papery, sparsely villous;

stipe 10–15 mm.

deflexed or declined, stramineous, straight or slightly incurved, narrowly oblong, laterally compressed, bicarinate by sutures, (15–)20–35 × 4.4–6(–7) mm, thinly fleshy becoming stiffly papery, terminal cusp 0.5–1 mm, strigose to glabrate;

sessile or subsessile.

19–29.

= 22.