Flora of North America species comparison

to 75 cm, sparsely branched, glandular, puberulent to pubescent or, sometimes, glabrate;

proximal 1–9 nodes usually naked and with cataphylls, light brown, 5–7 mm, striate, puberulent.

stipules tardily deciduous, light to dark brown, triangular or lanceolate to linear-spatulate, 4–10 × 0.5–2 mm, venation few;

petiole 1–4.6 cm, ribbed, base slightly to moderately swollen and different color and texture, sometimes slightly winged, glandular, minutely puberulent;

rachis 1.2–2.2 cm;

petiolules brown, 2–3.5 mm, sparsely glandular, brown-puberulent;

leaflet blades usually lanceolate, rarely rhombic to obovate, 3.5–6.5 × 2–3.7 cm, base attenuate, apex rounded to acute, surfaces abaxially less glandular and sparsely puberulent and with prominent veins, adaxially glandular and glabrous.

with 5–20 nodes, 2 or 3 flowers per node, ovoid;

rachis 1.5–4 cm, internodes 1.5–3 mm;

bracts usually late deciduous, caudate-lanceolate to oblanceolate, 3–7 × 1–2.5 mm, abaxially glandular, sparsely pubescent, hairs black.

5–9.5 cm.

1.5–2 mm, at a node often subtended by very reduced, secondary bracts.

13–15 mm;

calyx persistent (in fruit), broadly campanulate (in fruit), 9–10 mm, glandular and strigose, hairs white and/or black, tube stramineous-brown, 6 mm, lobes triangular, 2–3 mm;

corolla cream to light yellow, banner 14–15 mm;

filaments 10.5–12 mm;

anthers elliptic;

pistil 10–11.5 mm;

ovary sericeous, style base subsericeous.

elliptic, 9–13 × 5–6 mm, beak broadly attached, triangular, to 3 mm, glandular, pubescent, hairs red-brown, short.

red-brown, 6.5–7 × 3.5–4 mm.