Flora of North America species comparison

slightly sclerophyllous, 5–10 cm, dull glaucescent, sparsely hairy;

stipules caducous, 1–3 mm wide;

extrafloral nectaries between all leaflet pairs, stipitate;

leaflet pairs 3–6, blades oblong- or ovate-elliptic, 15–40 ×7–13 mm.

usually 5–25-flowered;

bracts caducous.

0–5 mm.

monosymmetric (similar to S. lindheimeriana but smaller);

calyx usually pale green, rarely yellow;

corolla yellow, longest petal 8–10.5 mm;

androecium heterantherous, stamens 7, staminodes 3;

anthers 3–5 mm, dehiscing by 1 apical pore, apical appendage 0;

gynoecium linear, ovules unknown;

ovary densely hairy;

style incurved.

erect, flat, straight or slightly incurved, 40–120 × 3.5–6.5 mm, shallowly corrugated over seeds, dehiscent.

brown, obovoid or oblong-obovoid.