Flora of North America species comparison

decumbent or prostrate to erect [climbing], villous to glandular-hairy [glabrous].

cauline, alternate, sometimes opposite proximally;

petiole present;

blade oblong-ovate to orbiculate or cordate, not fleshy, not leathery, margins entire or dentate [lobed].

petiole 1–4 mm;

blade 4–40 × 3–30 mm, base rounded to cordate, villous with scattered glandular hairs.

axillary, flowers solitary;

bracts absent.

present, spreading;

bracteoles absent.

6–12 mm.

bisexual;

sepals 5, basally connate, equal, calyx radially symmetric, campanulate, lobes lanceolate [linear], villous;

corolla yellow [white], often tinged blue to violet [red], bilaterally symmetric, bilabiate and personate, tubular, tube base not gibbous, spurred abaxially, lobes 5, abaxial 3, spreading, adaxial 2, erect, subequal, apex round;

stamens 4, basally adnate to corolla, didynamous, included, filaments incurved, sparsely hairy or glabrous, anthers coherent, ciliate, pollen sacs oblong;

staminode 0;

ovary 2-locular, villous, locules subequal, placentation axile;

stigma capitate.

sepal lobes broadly lanceolate to ovate, 5–6 × 3–4 mm, accrescent, apex acute, villous;

corolla tube 3–5 mm, palate yellow, inflated, hairy, spurs 6–8 mm, abaxial lobes yellow, adaxial violet, 3–4 mm;

abaxial filaments 2–2.5 mm, adaxial 1.5–2 mm;

style included, 1.2–1.5 mm;

stigma straight.

capsules, dehiscence poricidal [indehiscent].

ovoid-globular, 3–5 mm.

[6–]20–40[–60], dark brown to black, oblong-ovoid [reniform], wings absent.

1–1.5 mm, cristate-tuberculate.

= 9.

= 18.