Flora of North America species comparison

usually branched, rarely unbranched, (0.3–)0.6–3(–4) dm, densely pubescent proximally, trichomes simple, 0.4–1.3 mm, with fewer 2–4-rayed ones, to 0.3 mm, (distally with mostly branched trichomes, with fewer, simple ones).

unbranched, (0.15–)0.3–0.7(–1) dm, pubescent proximally, trichomes simple and spurred, 0.4–0.8 mm, and short-stalked, 2–4-rayed, 0.1–0.4 mm, (sometimes with simple trichomes distally).

rosulate;

petiolate;

petiole base and margin ciliate, (trichomes simple, 0.2–0.7 mm);

blade lanceolate or oblanceolate to spatulate, 0.5–2.9 cm × 1–5(–9) mm, margins dentate, surfaces pubescent, abaxially with stalked, cruciform, or 2- or 3-rayed trichomes, 0.1–0.4 mm, (rarely with a branched ray), adaxially with simple trichomes, 0.1–0.7 mm, and stalked, 2–4-rayed ones.

subrosulate;

sessile;

blade oblanceolate to oblong, (0.3–)0.5–0.8 cm × 1–3 mm, (base ciliate, trichomes simple, 0.2–0.8 mm), margins entire, (not ciliate), surfaces usually pubescent, with stalked, (2–)4 (or 5)-rayed trichomes, 0.2–0.5 mm, adaxially sometimes glabrate, or primarily with simple trichomes, 0.3–0.8 mm.

(15–)22–54(–76), (densely imbricate at least basally);

sessile;

blade ovate to oblong or lanceolate (base often densely bearded abaxially, trichomes simple, to 1.3 mm), margins dentate, surfaces pubescent as basal.

(0 or) 1–4;

sessile;

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

(11–)17–36(–48)-flowered, bracteate basally, elongated or not in fruit;

rachis not flexuous, pubescent as stems distally.

(3–)7–15(–20)-flowered, ebracteate, elongated in fruit;

rachis not flexuous, pubescent as stem.

sepals ovate, 2–2.5 mm, pubescent, (trichomes simple and short-stalked, 2–4-rayed);

petals white, spatulate, 3.5–4.5 × 1–2 mm;

anthers ovate, 0.3–0.4 mm.

sepals ovate to oblong, 2–3 mm, pubescent, (trichomes simple, with fewer, short-stalked, 2-rayed ones);

petals white, obovate, 3.5–6 × 1.5–2.8 mm;

anthers oblong, 0.5–0.6 mm.

erect to ascending, (subappressed to rachis), straight, (1.5–)2.5–6(–13) mm, pubescent, trichomes 2–4-rayed and simple.

divaricate-ascending to ascending, straight, 3–10 mm, pubescent, trichomes simple and short-stalked, 2–4-rayed, (0.1–0.4 mm).

oblong to linear-lanceolate or elliptic, slightly twisted or plane, flattened, 5–10(–12) × 1.5–2.5(–3) mm;

valves glabrous or pubescent, trichomes simple and short-stalked, 2–4-rayed, 0.05–0.3 mm;

ovules (24–)30–40 per ovary;

style 0.01–0.25 mm.

broadly or, rarely, narrowly lanceolate to elliptic or ovate, plane or slightly twisted, flattened, (4)5–8(–10) × 2–3.2 mm;

valves (each with distinct midvein), pubescent, trichomes simple and short-stalked, 2-rayed, 0.08–0.2 mm;

ovules 12–24 per ovary;

style (0.7–)1–1.8(–2.1) mm.

oblong, 0.7–1.1 × 0.5–0.6 mm.

oblong, 0.9–1.3 × 0.7–1 mm.

= 32.

= 32.