Flora of North America species comparison

erect to prostrate or sprawling, usually uncinulate-pubescent.

alternate, usually unifoliolate, rarely odd-pinnate;

stipules present, persistent, striate, narrowly ovate, acuminate;

petiolate, petiole channeled, minutely winged;

leaflet(s) usually 1, rarely 3, stipels 2, minute, blade margins entire, surfaces usually pubescent, at least abaxial.

6–30+-flowered, usually leaf-opposed or terminal, sometimes axillary, usually racemes, sometimes panicles;

bracts present often conspicuous, striate, secondary bracts present;

bracteoles absent.

papilionaceous;

calyx campanulate, sepals connate only near base, lobes 5, striate, subequal, adaxial 2 often connate nearly to apex;

corolla red to reddish blue, reddish violet, orange, orange-buff, pink, pinkish lavender, or white;

stamens 10, diadelphous;

anthers basifixed;

ovary sessile or shortly stipitate, style incurved at apex, glabrous, stigma terminal, slightly capitate.

loments, sessile, distal segment often abortive and stipelike, turgid or laterally compressed, straight or constricted, ovoid or oblong to linear, indehiscent, reticulate, sometimes also rugose, glabrescent or uncinate-puberulent;

segments 2–8.

2–8, oblong or 4-sided; scarcely rim-arillate.

= (7), 8, [11].