Flora of North America species comparison

erect, 10–20 cm, stipitate-glandular.

erect, (10–)20–40(–70) cm, glabrous to stipitate-glandular.

basal leaves ± deciduous;

cauline leaves (2–)3–5 of equal size distally;

basal blades ascending to ± spreading, narrowly linear, 1.5–3.5 cm × 1–1.5 mm, ± flexuous, ± succulent, apex green, blunt or acute to apiculate, glabrous, not glaucous.

basal leaves sparse or absent;

cauline leaves usually in 5–12+ pairs, not significantly reduced;

basal blades ascending to arcuate-spreading or recurved, needlelike or narrowly linear, (0.7–)2–6(–7) cm × 0.8–2 mm, ± rigid, herbaceous to subsucculent, apex blunt to spinose, glabrous, not glaucous.

7–40+-flowered, ± open cymes.

3–20(–30)-flowered, ± compact cymes;

branches ascending to erect.

3–20 mm, stipitate-glandular.

3–45 mm, glabrous or stipitate-glandular.

sepals 1–3-veined, lateral pair obscure, ovate, 3–3.8 mm, 4–4.5 mm in fruit, margins broad, apex obtuse to rounded or barely acute, stipitate-glandular;

petals white, narrowly spatulate, 6.6–7.5 mm, 2 times as long as sepals, apex rounded or emarginate;

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

sepals 1–3-veined, ovate to lanceolate or elliptic, 4.5–7.2 mm, to 8 mm in fruit, margins narrow to broad, apex acute to acuminate, glabrous to sparsely stipitate-glandular;

petals white or yellowish, oblanceolate to spatulate, 6–11 mm, 1–2 times as long as sepals, apex entire or erose;

nectaries thickened, molarlike, apically 2-lobed, 1–1.5 mm, or narrowly longitudinally rectangular, truncate, 0.7–0.8 mm, densely minutely pubescent with erect to spreading hairs.

4.5–5.5 mm, glabrous.

6–8 mm, glabrous.

black to brown, oblong to pyriform, 1.8–2.4 mm, smooth to tuberculate.

greenish or reddish brown to blackish, suborbicular to pyriform or ovoid, 1.3–3.2 mm, tuberculate, sometimes echinate on abaxial ridge;

tubercles low, rounded to conic.