Flora of North America species comparison

unbranched or branched, 0.3–1.5 dm, hirsute throughout, trichomes simple and long-stalked, 2–4-rayed, 0.2–1.5 mm.

(forming dense clusters); rosulate;

sessile;

blade oblanceolate to linear, (0.7–)1–2.5(–3.2) cm × 2–3.5(–5) mm, margins entire, (ciliate, trichomes simple and 2-rayed, 0.5–1.5 mm), surfaces densely hirsute, abaxially with stalked, 3–5-rayed trichomes, 0.1–0.5 mm, adaxially with simple and long-stalked, 2-rayed trichomes, to 1 mm, with smaller, 3–5-rayed ones.

5–33;

sessile;

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

petiolate or sessile;

blade base auriculate or not, margins entire or dentate.

12–83-flowered, ebracteate or proximalmost 1–9 flowers bracteate, slightly or not elongated in fruit;

rachis not flexuous, hirsute as stem.

usually ebracteate, often elongated in fruit.

sepals ovate, 2.5–4 mm, glabrous;

petals bright yellow, linear to linear-oblanceolate, 4–6 × 0.5–1(–1.2) mm;

anthers narrowly oblong, 0.8–1 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, usually straight, rarely curved upward, (3–)5–12(–19) mm, hirsute as stem.

oblong or, rarely, oblong-ovate, plane, flattened, (6–)9–14(–16) × 3–5 mm;

valves pubescent, trichomes stalked, 2–4-rayed, 0.07–0.5 mm;

ovules 10–20 per ovary;

style (0.6–)1–1.6(–2) 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.

oblong, 1.4–1.9 × 0.8–1.1 mm.

biseriate or uniseriate [rarely aseriate];

cotyledons accumbent.

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

= 20.