Flora of North America species comparison

semi-erect or erect to prostrate, straight or flexuous, pubescent, sometimes glandular-pubescent.

alternate, odd-pinnate;

stipules present, foliaceous, sometimes larger than proximalmost leaflets, toothed [spiny];

rachis apex with leaflet [tendril or spines];

petiolate;

leaflets [3–]6–20[–36], blade margins dentate except at base, surfaces glandular-pubescent.

stipules ovate to oblique-triangular, 3–5(–11) × (1–)2–4(–6) mm, teeth 2–4(–6);

petiole 5–10 mm;

rachis green distally, with or without anthocyanins, or purple throughout, 25–60(–75) mm, grooved adaxially;

leaflets opposite or alternate, subsessile, crowded or not, blades obovate-oblong to elliptic, (6–)10–15(–20) × (3–)4–12(–14) mm, base cuneate to rounded, margin teeth sometimes curved, to 1.5(–2) mm, apex rounded to acuminate, abaxial surface more prominently ribbed and more glandular-pubescent than adaxial.

1(or 2)[–5]-flowered, axillary, racemes;

bracts present, persistent;

bracteoles absent.

(6–)13–17(–30) mm;

bracts 0.5–1.5 mm.

straight in flower, recurved in fruit, 6–13 mm.

papilionaceous;

calyx gibbous at base abaxially [subregular], lobes 5;

corolla white to pink, purple, or blue;

stamens 10, diadelphous;

anthers basifixed;

ovary pubescent;

style glabrous;

stigma relatively small.

calyx green or purple, tube 3–4 mm, lobes lanceolate, 5–6 mm, midrib prominent;

corolla 5–29 mm, veined;

stamens 6–8 mm;

ovary ovoid, 2–3 mm;

style 3–4 mm.

legumes, pedicellate, inflated, rhomboid-ellipsoid [ellipsoid to obovoid-rhomboid], late-dehiscent, densely pubescent, mostly glandular-pubescent.

14–25(–29) × 8–15(–20) mm.

1 or 2[–4], ovoid-globular or angular [bilobular to globular].

white, cream, brown, black, or dull green, (4–)7–10(–11) × 5–8 mm, beak conspicuous, coat rough or smooth (sometimes minute black dots or speckles present);

hilum grayish, deep.

= 8.

= (14), 16.