Flora of North America species comparison

obscured by stipules.

aerial tips prostrate or ascending, nodes short, strigulose-pilosulous and ashy gray.

reduced to phyllodia, 1–13(–17) cm;

stipules conspicuous, usually connate-sheathing, 2–8 mm, white-membranous;

phyllodia linear-oblanceolate proximally, narrowly linear distally, 1–3 mm wide, apex very acute and subspinulose distally, surfaces strigose.

1.5–7(–8) cm;

stipules connate-sheathing, 2–5 mm, submembranous;

leaflets mostly crowded, blades folded or involute, ovate, ovate-oblong, or elliptic, 2–10 mm, apex obtuse to acute, surfaces pubescent, sometimes glabrescent adaxially.

loosely 7–23-flowered, in bud resembling grass spikelets;

axis 4.5–24 cm in fruit;

bracts 2–4.5 mm;

bracteoles 0.

loosely (1–)3–6-flowered, (0–)1–10(–15) mm (in fruit);

bracts 1.5–5 mm;

bracteoles 0–2.

erect, slender, wiry, 2–9(–11) cm.

procumbent (in fruit), 1–3(–6.5) cm.

1–2.5 mm.

0.5–1.5 mm, (1–2 mm in fruit).

6.2–8.5 mm;

calyx 4.5–8.5 mm, strigose, tube 2–3.5 mm, lobes rigid-spreading and subulate-aristiform, 2.5–5.2 mm;

corolla pink-purple, banner striate;

banner recurved through 90°;

keel 6–6.6 mm.

10.7–12.5 mm;

calyx 5–7 mm, strigulose, tube 3–4.2 mm, lobes subulate, 1.8–3 mm;

corolla pink-purple, lilac, or whitish, keel apex maculate, banner veined and suffused with lilac;

keel 9–10 mm.

erect or ascending, green, often with purple or red spots, becoming stramineous, curved, obliquely lanceoloid or oblong, laterally compressed, 7–12 × 1.7–3 mm, stiffly papery, glabrous or strigose;

sessile.

slightly incurved, 6.5–11.5 × 3–3.5 mm, thinly submembranous, strigulose.

4–8.

6–9.