Flora of North America species comparison

erect or scandent, young growth densely strigose or villous or glabrescent, peduncles and pedicels eglandular.

unifoliolate;

stipules lanceolate, 10 × 2 mm, apex acuminate;

petiole 0.4–0.6 cm, puberulent to sericeous;

petiolules 3–5 mm, puberulent;

leaflet blades elliptic to ovate, (25–)50–80 × (20–)50–80 mm, base rounded to subcordate, apex abruptly narrowed to obtuse tip, surfaces sometimes discolorous, sublustrous, subsericeous, becoming moderately appressed-pubescent or glabrous.

alternate, odd-pinnate or unifoliolate;

stipules present, caducous;

petiolate;

leaflets 1–5[+], alternate, stipels absent, blade margins entire, surfaces glabrous or pubescent.

racemose in fascicles, axes pilose;

bracts caducous, blade deltate, 1 × 0.5 mm, apex acute;

bracteoles subpersistent, blade deltate-ovate, 1 × 0.3–0.5 mm, apex acute.

10–50-flowered, axillary [lateral or terminal], racemes, panicles, or corymbs;

bracts present;

bracteoles paired proximal to calyx.

1–1.5 mm.

calyx 3–3.5 mm, base rounded, pilose or subsericeous, lobes subequal, barely distinct from tube, deltate;

corolla usually white, sometimes pinkish, 8–9 mm;

stamens 10, monadelphous or diadelphous (5 + 5);

filaments nearly equal;

pistil glabrous.

papilionaceous;

calyx campanulate, lobes 5;

corolla usually white, creamy white, or yellowish, sometimes pinkish [purple], glabrous;

stamens 9 or 10, monadelphous or diadelphous [triadelphous];

anthers basifixed, relatively small, dehiscing apically;

style glabrous;

stigma terminal, small.

legumes, stalk present, compressed, straight, compressed, narrowly ellipsoid to oblong or subglobose to subreniform, indehiscent, often winged (samaroid), glabrous or pubescent.

stalk 3 mm;

subglobose to subreniform, 20–35 × 15–20 mm, base rounded, apex rounded, surface sericeous becoming appressed-pubescent or glabrescent.

1.

1–4[–6], reniform;

hilum lateral.

= 10.

= 20.