Flora of North America species comparison

erect or ascending, often (paniculately) branched distally.

usually several, 1.5–6 dm.

basal and cauline;

petiolate;

basal rosulate, petiolate (petioles deeply grooved), blade margins repand, sinuate, dentate, or pinnatifid;

cauline petiolate, blade (much smaller than basal), margins entire [dentate, sinuate].

petiole 0.3–2.5(–3.5) cm;

blade obovate-oblong, 2.5–8 cm × 3–10 mm, base cuneate to attenuate, margins entire, sinuate, or pinnatifid, apex acute or obtuse, surfaces densely pubescent.

blade oblanceolate to linear.

(corymbose, several-flowered, buds globose), slightly or considerably elongated in fruit.

considerably elongated in fruit.

sepals spreading, ovate, lateral pair not saccate basally;

petals yellow [white], obovate to spatulate, claw slightly differentiated from blade, (apex emarginate, [2-fid or obtuse]);

stamens tetradynamous;

filaments dilated (winged or minutely appendaged) basally;

anthers ovate;

nectar glands lateral, 1 on each side of lateral stamen.

sepals yellowish, 1.5–2 × 0.5–1 mm, scarious at margins, finely pubescent;

petals 3–4.5 × 1.2–2 mm, attenuate to clawlike base;

filaments with basal wing or appendage to 0.5 mm, 1.2–2 mm;

anthers 0.3–0.5 mm.

divaricate or ascending, slender.

3–8 mm.

sessile, ellipsoid to obovoid, or broadly obovate to orbicular [globose, elliptic], not torulose, terete or latiseptate;

valves each not veined, glabrous [pubescent];

replum rounded;

septum usually complete, rarely perforate;

ovules 4–8(–16) per ovary;

stigma capitate, usually 2-lobed, rarely subentire.

divaricate-ascending, ellipsoid to obovoid, inflated at middle, slightly flattened at margin, 3–6 × 2–4 mm;

style slender.

uniseriate or biseriate, flattened, winged [not winged], suborbicular [orbicular or elliptic];

seed coat not mucilaginous when wetted;

cotyledons incumbent or oblique.

winged throughout, 1.5–1.8 mm diam.;

wing 0.1–0.3 mm wide.

= 8.

= 16.