Flora of North America species comparison

absent, leaves clustered;

pseudoscapes 5–7 cm (when present);

cataphylls 7–9 mm, striate, clustered apically.

pinnately 3-foliolate;

stipules persistent, lanceolate to oblanceolate-oblong, 5–7(–12) × 2.5–3 mm, stramineous, eglandular, glabrous;

petiole swollen proximally or not, not jointed, (30–)50–120 mm;

petiolules 2 mm;

leaflet blades orbiculate to obovate-trullate, lateral 2 usually asymmetrical, 1.5–2.5(–3.2) × 1–2.4 cm, base broadly cuneate or truncate, apex broadly acute, surfaces abaxially white-pubescent, adaxially white-hirsute along veins and margins.

disjointing in age at peduncle base, ovate to elliptic;

rachis 1.4–1.6 cm, crowded, nodes 4–7, 3 flowers per node;

bracts persistent, caudate-lanceolate, 5–8 × 2–3.5 mm, pubescent throughout or only at apex.

2–10 cm, shorter than subtending petiole, glabrous proximally, pubescent distally.

1–3 mm.

12–20 mm;

calyx gibbous-campanulate in fruit, 10–15(–17) mm, pubescent throughout or teeth only;

tube 5–7 mm;

lobes linear or linear-lanceolate, abaxial 8–8.5 × 1–1.5 mm, adaxial 6–7.5 × 0.5–1 mm;

corolla white and blue-purple, banner white to pale purple, oblanceolate, 15–17 × 6–7 mm with claw 4.5–5.5 mm, wings blue-purple, 12–14 × 2.5–3 mm with claw 5.5–6.5 mm, keel dark purple, 14–16 × 2.5–3 mm with claw 8.5 mm;

filaments 16 mm;

anthers elliptic, 0.7 mm;

ovary glabrous, style glabrous.

oblong-ellipsoid, 5–7 × 3.5–4 mm, eglandular, pubescent apically, beak 4–5 mm, about as long as calyx.

black, ellipsoid-reniform, 3.5–6 × 2.5–4 mm.