Flora of North America species comparison

usually branched, rarely unbranched, (0.3–)0.4–1.9(–2.2) dm, pubescent throughout, trichomes sessile, cruciform, 0.2–0.6(–0.8) mm (rays often equal, or those parallel to stem axis longer).

not rosulate; petiolate;

petiole (to 0.5 cm), not ciliate;

blade oblanceolate to obovate, 0.5–2 cm × 2–8 mm, margins entire, surfaces pubescent, trichomes cruciform, 0.2–0.6(–0.8) mm.

(4–)6–11;

sessile;

blade lanceolate to oblong or linear, margins entire, surfaces pubescent as basal.

petiolate or sessile;

blade base auriculate or not, margins entire or dentate.

(main branch) (20–)25–65(–74)-flowered, ebracteate, elongated in fruit;

rachis not flexuous, pubescent as stem.

usually ebracteate, often elongated in fruit.

(late ones cleistogamous, apetalous);

sepals (green or pink), oblong, 0.7–1.2(–1.5) mm, pubescent;

petals white, spatulate, 2–3 × 0.8–1.1 mm;

anthers ovate, 0.15–0.25 mm.

actinomorphic;

sepals erect, ascending, or spreading, lateral pair seldom saccate basally;

petals white, yellow, orange, pink, or purple, claw usually present, usually distinct;

filaments unappendaged, not winged;

pollen 3-colpate.

horizontal to divaricate-ascending, straight, (1–)1.5–4(–5) mm, pubescent, trichomes cruciform.

usually elliptic to linear-elliptic, rarely ovate-elliptic, plane, flattened, (2–)2.5–5(–6) × 0.9–1.4(–1.9) mm;

valves glabrous;

ovules 8–16(–20) per ovary;

style 0.05–0.1 mm.

silicles or siliques, usually dehiscent, very rarely indehiscent, unsegmented, latiseptate or terete;

ovules 2–70(–88)[–110+] per ovary;

style usually distinct, sometimes obsolete;

stigma usually entire, rarely 2-lobed.

(winged), ovoid, 0.5–0.7 × 0.4–0.5 mm.

biseriate or uniseriate [rarely aseriate];

cotyledons accumbent.

stalked or sessile, usually stellate, dendritic, cruciform, or forked, sometimes mixed with simple ones, rarely malpighiaceous.

= 16.