Flora of North America species comparison

erect, 3–10(–15) cm, glabrous.

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

basal leaves persistent;

cauline leaves in 6–10 pairs, closely overlapping, not reduced;

basal blades arcuate-spreading, needlelike, (0.6–)1–2 cm × ca. 1 mm, ± rigid, herbaceous, apex spinose, glabrous, not glaucous.

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.

3–45+-flowered, usually congested, subcapitate cymes.

5–25+-flowered, open cymes.

ca. 0.1–3(–4) mm, glabrous.

3–25 mm, stipitate-glandular.

sepals 1–3-veined, linear-lanceolate, (5–)8.5–12 mm, not enlarging in fruit, margins narrow, apex acuminate, glabrous;

petals white, oblong-lanceolate to narrowly spatulate, 7–9 mm, 0.8–1.1 times as long as sepals, apex rounded to blunt;

nectaries not apparent.

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.

2.3–3.3 mm, glabrous.

5–9 mm, glabrous.

black, pyriform, 1.2–1.7 mm, tuberculate.

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

tubercles rounded, elongate.

= 22.