Flora of North America species comparison

prostrate, when developed, to 8 cm, internodes often obscured by stipules, strigulose.

erect or ascending, finely strigulose.

1–12 cm;

stipules connate-sheathing at proximal nodes, connate or distinct at distal nodes, 1.5–7 mm, submembranous becoming papery-scarious;

leaflets (3–)7–17, blades elliptic to oblanceolate or obovate, 2–13 mm, apex acute to obtuse, surfaces strigose abaxially, strigose or glabrate 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.

3–16(–18)-flowered, flowers ascending to declined;

axis 0.4–13 cm in fruit;

bracts (1–)1.5–5 mm;

bracteoles 0–2.

3–15-flowered, flowers ascending-spreading;

axis 0.5–6 cm in fruit;

bracts 1.2–2 mm;

bracteoles 1 or 2.

erect and ascending, 0.5–13 cm.

erect, 7–21 cm.

0.5–1.4(–2) mm.

1.5–3 mm.

6–9 mm;

calyx campanulate, 3.5–6 mm, strigose-pilose, tube 2.5–4.2 mm, lobes subulate, 0.8–2.6 mm;

corolla pink-purple or bicolored;

keel 5.9–12.5 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.

declined to deflexed, green, usually red-mottled or -spotted, becoming stramineous, ± straight or lunately to very strongly incurved through 0.75(–1) spiral, obliquely ovoid to lanceoloid-ellipsoid, dorsiventrally compressed, 6–19 × 3–6 mm, unilocular, papery-membranous, hirsute, hairs lustrous;

sessile, gynophore 0–1.2 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.

16–28.

19–29.

= 22.