Flora of North America species comparison

erect, trailing, or twining, 5–50 cm.

usually climbing, to 200 cm.

stipules sometimes red-purple pigmented, appressed to stem, reflexed or distally spreading, ovate to ovate-lanceolate, 1.8–6.5(–8.5) × 0.7–3(–4) mm (larger distally);

petiole 1.8–3.4 cm;

rachis 0.4–1 cm;

stipels subulate to ovate or lanceolate, 1–2.5 mm;

leaflet blades usually linear to lanceolate, sometimes narrowly trullate, sometimes terminal leaflets with 2 basal lobes each side, lateral leaflets often ± distinctly round lobed basally on 1 or both sides, laterals 2–4.7 × 0.5–1.3(–2.8) cm, terminal 2.4–5.6 × 0.3–1.2(–2.7) cm, thin, base attenuate, apex round or acute, obscurely apiculate, surfaces sparsely pubescent abaxially, scabrous adaxially.

stipules ascending, spreading, or reflexed, oblong to triangular or lanceolate, 3–5.5 × 1–2.5(–3) mm;

petiole 1–6.5(–7.3) cm;

rachis 0.5–2 cm;

stipels oblong-subulate, 1–1.5 mm, 1 or 2-veined;

leaflet blades ovate to lanceolate, deeply 3-lobed, dissected, basal lobe rounded to quadrate, middle lobe triangular to oblong or linear-lanceolate, laterals (0.7–)2–5.5(–6.5) × (0.4–)1.3–4(–5.5) cm, terminal (1.5–)2.5–6.5(–7.5) × (0.5–)1.5–4.6(–7.5) cm, membranous to firm, base rounded to truncate, apex acute, surfaces glabrous or sparsely covered with ascending hairs, mainly along veins.

2–18 cm;

axis sparsely covered with minute, uncinate hairs;

rachis 0.2–0.6 cm, with 1–3 (usually 1-flowered) nodes;

bracts lanceolate, 4 × 1.5 mm, 4–6-veined.

often also with lateral, floral branches, 5–30(–40) cm;

main axis usually sparsely to densely covered with ascending (often retrorse) and uncinate hairs or glabrous;

rachis usually 2.5–10 cm, with 3–14 often biflorous nodes;

primary bracts ovate to lanceolate or broadly ovate, 1–5(–7) × 0.5–3.5 mm, 3–9-veined.

2–12 cm.

1.5–18.5 cm.

to 10 mm, shorter than flowers, uncinate-pubescent;

bracteoles persistent, ovate or obsolete, 0.1–0.5 mm.

3–10 mm, covered with only uncinate hairs or with ascending and interspersed uncinate hairs;

bracteoles usually persistent, ovate to linear-lanceolate, 0.5–2 mm.

calyx campanulate-tubular, 5–8 mm, adaxial proximal portion rounded, papillate, covered with minute, uncinate hairs;

abaxial lobes lanceolate;

lateral lobes usually triangular, sometimes falcate;

adaxial lobes connate nearly throughout;

corolla violet, lavender-pink, or purple, 15–25 mm;

banner obovate or spatulate, 12–16 mm, apex obtuse, emarginate;

wings obovate, 15–27 mm, rounded-auriculate on distal margin at base;

keel 10 mm;

ovary linear, 6–7.5 mm, glabrous, marginally scabrous.

calyx campanulate, 2–3(–4) mm, glabrous or hirtellous to strigillose, abundantly so on abaxial lobe;

abaxial and lateral lobes triangular;

adaxial lobes connate;

corolla usually pink or purple, rarely white, 12–15 mm;

banner oblong to orbiculate, 10 mm, apex emarginate, glabrous;

wings obovate, 12–16 mm;

keel 5.5–9 mm;

ovary linear, 4–6.5 mm, sparsely covered with appressed hairs.

horizontal to pendent, terete, linear-straight to slightly falcate, 35–45 × 3–4 mm, elastically dehiscent, valves leathery, glabrous.

pendent, compressed, linear-falcate, 30–45(–51) × 8–10(–15) mm, elastically dehiscent, valves thin, sparsely covered with ascending hairs, sessile.

8–11, usually brown to light brown or grayish green, punctate and mottled black, sometimes light green, oblong or reniform, 2–3.7 × 1.7–2.6 mm, smooth;

hilum ovate-oblong, 0.4–0.5 mm.

2–5(or 6), brown or gray, mottled with black, oblong to reniform, 4.2–7.5 × 3.5–7 mm, smooth;

hilum oblong-ovate, 0.8–1.2 mm.

perennial, with deep-seated, oblong or spherical tuberous taproots.

perennial, with thick, elongate, tuberous taproots.

= 22.