Flora of North America species comparison

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

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

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 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.

5–25+-flowered, open cymes.

(1–)3–6-flowered, open cymes.

3–25 mm, stipitate-glandular.

6–25 mm, 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 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.

5–9 mm, glabrous.

7–10 mm, glabrous.

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

tubercles rounded, elongate.

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

tubercles rounded, elongate.

= 22.