Flora of North America species comparison

erect, 7–25(–30) cm, densely stipitate-glandular distally.

erect to ascending, (3–)5–20(–25) cm, entirely glabrous or glabrous proximally, stipitate-glandular distally.

basal leaves persistent;

cauline leaves in 1–3 pairs, abruptly reduced distal to lowest pair;

basal blades ascending or often arcuate-spreading, needlelike, (0.5–)1–2.5(–3.5) cm × 0.5–1.5 mm, rigid, herbaceous, apex spinose, glabrous to puberulent, glaucous.

basal leaves abundant, persistent;

cauline leaves in 1–3 pairs, abruptly reduced distal to lowest pair;

basal blades erect, straight or often curved in one direction, filiform, (2–)4–8 cm × 0.5–1 mm, flexuous, herbaceous, apex acute or acuminate to weakly spinose, glabrous, sometimes stipitate-glandular, often glaucous.

5–25+-flowered, open cymes.

1–12(–18)-flowered, open or rarely subcongested cymes.

3–25 mm, stipitate-glandular.

(2–)5–20 mm, glabrous or stipitate-glandular.

sepals 1–3-veined, lateral veins less developed or all obscure, ovate, 3–4.5 mm, to 6 mm in fruit, margins broad, apex usually obtuse to rounded, abruptly acute, sparsely to densely stipitate-glandular;

petals white, obovate to oblanceolate, 4.5–10 mm, 1.5–3 times as long as sepals, apex rounded;

nectaries as lateral and abaxial rounding, with slight lateral expansion, at base of filaments opposite sepals, 0.3 mm.

sepals often purplish, 1–3-veined, ovate to ovate-lanceolate, 3–4.7 mm, to 5 mm in fruit, margins broad, apex broadly rounded to barely acute, glabrous or stipitate-glandular;

petals white, spatulate, 6–10 mm, 1.5–2.5 times as long as sepals, apex broadly rounded;

nectaries as depressed transverse cup at base of filaments opposite sepals, 0.3–0.7 × 0.1–0.3 mm.

5–9 mm, glabrous.

5–8 mm, valves at least sparsely stipitate-glandular or glabrous.

yellowish tan to gray, ellipsoid-oblong, 1.8–2.5(–3.2) mm, tuberculate;

tubercles rounded, elongate.

brown to black, ellipsoid to ovoid with hilar notch, (1.2–)1.5–2(–2.5) mm, tuberculate;

tubercles rounded, elongate.

= 22.