Flora of North America species comparison

erect or ascending, finely strigulose.

prostrate or weakly ascending, 1.5–9+ cm underground, sparsely strigulose.

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.

1–7 cm;

stipules connate-sheathing and papery-membranous throughout, (1.3–)2–5 mm;

leaflets (7 or)9–17, blades elliptic to oblong, 1.5–6 mm, apex emarginate, retuse, or obtuse, surfaces strigulose abaxially, glabrous adaxially.

3–15-flowered, flowers ascending-spreading;

axis 0.5–6 cm in fruit;

bracts 1.2–2 mm;

bracteoles 1 or 2.

loosely 1–3(–6)-flowered;

axis 3–13 mm;

bracts 0.7–2 mm;

bracteoles 0.

erect, 7–21 cm.

decumbent (in fruit), (1.5–)2–7 cm.

1.5–3 mm.

1–2 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.

10–16 mm;

calyx 4.6–7, black-strigulose, tube 3.4–6 mm, lobes triangular to lanceolate, 1–2.5 mm;

corolla usually pink-purple, rarely white;

banner recurved through 45°;

keel 9–9.7 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.

loosely ascending, green, often red-tinged, straight or slightly curved, ovoid, strongly turgid or bladdery, (15–)18–43 × 4.5–12(–15) mm, papery-membranous, black-strigose;

gynophore 0–1 mm.

19–29.

8–17.

= 22.

= 24.