Flora of North America species comparison

erect, (8–)10–25 cm, glabrous or stipitate-glandular.

erect, (3–)10–23 cm, moderately to densely stipitate-glandular.

basal leaves persistent;

cauline leaves usually in 2–4 pairs, reduced distally;

basal blades spreading to recurved, needlelike, 1–3(–3.5) cm × 0.5–0.7 mm, flexuous to rigid, herbaceous, apex spinose, glabrous to puberulent, not glaucous.

basal leaves abundant, persistent;

cauline leaves in 5–7 pairs, reduced distally;

basal blades spreading to arcuate-spreading, needlelike, 0.8–2 cm × 0.4–0.8 mm, ± rigid, not fleshy, herbaceous, apex spinose, glabrous, not glaucous.

(1–)3–17-flowered, ± open cymes.

(1–)3–6-flowered, open cymes.

3–30 mm, glabrous or stipitate-glandular.

6–25 mm, stipitate-glandular.

sepals green or purplish, 1–3-veined, lanceolate to ovate-lanceolate, (3.5–)4–6.5 mm, not enlarging in fruit, margins broad, apex narrowly acute to acuminate, glabrous or stipitate-glandular;

petals yellowish white or sometimes brownish to reddish pink, broadly oblong-elliptic to oblanceolate, 4–6.5 mm, 0.9–1.1 times as long as sepals, apex rounded;

nectaries narrowly longitudinally rectangular, apically cleft or emarginate, adjacent to filaments opposite sepals, 1–2 mm.

sepals 1–3-veined, lateral veins less developed, narrowly elliptic to ovate, 3.5–4 mm, 4.8–5.2 mm in fruit, margins usually broadly winged, scarious, apex broadly acute to obtuse (at least in fruit), glabrous or nearly so;

petals yellowish white, spatulate, 5.8–10 mm, 1.3–1.5 times as long as sepals, apex rounded;

nectaries as lateral and abaxial rounding of base of filaments opposite sepals, 0.2–0.3 mm.

4–6 mm, glabrous.

7–10 mm, glabrous.

brown, ovoid to suborbicular with hilar notch, 1.2–1.7 mm, papillate, subechinate;

tubercles conical.

brownish black, suborbicular with hilar notch, 2–2.4 mm, tuberculate;

tubercles rounded, elongate.