Flora of North America species comparison

few to several from base, erect, (usually unbranched), (1.5–)2.5–4(–6) dm.

few from base, erect with outer usually decumbent, 1–3.5(–5) dm.

blade elliptic to obovate, 2–6.5 cm, margins entire, sinuate, or remotely toothed, (surfaces occasionally sparsely pubescent).

(erect);

blade narrowly lanceolate to linear or (outer) oblanceolate, (1–)2–6(–9) cm, margins usually entire, rarely shallowly dentate, (inner involute, outer usually flat, base usually with some simple trichomes).

(proximal often petiolate, distal sessile or subsessile);

blade oblanceolate to linear, 1–4 cm, margins entire.

blade narrowly oblanceolate to linear, (1–)2–4(–8) cm, margins flat or involute.

dense, (subumbellate).

compact, (elongated and loose in fruit, densely-flowered).

sepals ovate or elliptic, 5.5–10 mm, (median pair thickened apically, cucullate);

petals (bright yellow), obovate to elliptic, 8–14 mm, (sometimes with distinct claw, often retuse).

sepals oblong to broadly elliptic, 4–7(–8) mm, (lateral pair subsaccate, median pair cucullate);

petals oblanceolate or obovate, (5–)6.5–9.5(–11) mm, (claw undifferentiated from blade, or blade gradually narrowed to claw).

(ascending), relatively short.

(usually recurved), (5–)10–20(–25) mm.

(shortly stipitate), ± globose or ellipsoid, not or slightly inflated, 5–8 mm;

valves (not retaining seeds after dehiscence), glabrous throughout;

replum as wide as or wider than fruit;

ovules (8–)12–20 per ovary;

style 3.5–5 mm.

subglobose or obovoid, usually inflated, sometimes slightly compressed, (3–)4–6 mm;

valves densely pubescent, trichomes spreading, usually pubescent inside, trichomes appressed, sessile;

ovules (4–)8–12(–16) per ovary;

style 3–4.5(–6.5) mm.

flattened.

slightly flattened.

= 12, 24, 36.

= 10, 20, 30.