Flora of North America species comparison

erect, 3–10(–15) cm, glabrous.

ascending to erect, 10–18 cm, often glandular-hairy.

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 3–5 pairs, reduced distally;

basal blades erect to ± spreading, needlelike, 0.5–1.1(–1.6) cm × 0.5–0.7 mm, rigid, herbaceous, not fleshy, apex blunt to apiculate, glabrous, ± glaucous.

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

(1–)3–7-flowered, ± open cymes.

ca. 0.1–3(–4) mm, glabrous.

0.3–2 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, ovate, often broadly so, 1.8–3 mm, to 4.2 mm in fruit, margins broad, apex obtuse or rounded, glabrous;

petals white, elliptic to oblanceolate, 2–4.5 mm, 1.4–1.6 times as long as sepals, apex rounded;

nectaries as lateral and abaxial rounding of base of filaments opposite sepals, with terminal lateral groove, 0.3 mm.

2.3–3.3 mm, glabrous.

4.5–6 mm, glabrous.

black, pyriform, 1.2–1.7 mm, tuberculate.

blackish purple, suborbicular to broadly ellipsoid with hilar notch, 2.2–2.5(–3) mm, tuberculate;

tubercles rounded, elongate.