Flora of North America species comparison

stout, woody.

filiform to somewhat thickened.

ascending to spreading, green or often purple, 1–3 cm, glabrous, internodes of flowering stems 0.2–1 times as long as leaves.

erect to widely spreading, green or purple, 4–30 cm, stipitate-glandular distally, internodes of all stems 1–5 times as long as leaves.

overlapping, ± tightly (vegetative), ± evenly spaced proximally (cauline), connate-perfoliate proximally, with tight, herbaceous sheath 0.2–0.3 mm;

blade upwardly curved, green or often purple, keeled, prominently 1-veined abaxially, subulate, 3-angled, 1–4 × 0.5–0.7 mm, flexuous, margins rounded, herbaceous, smooth, apex green to purple, rounded, navicular, shiny, glabrous;

axillary leaves well developed.

sometimes overlapping proximally, ± evenly spaced, connate proximally, with loose, scarious sheath 0.3–0.7 mm;

blade straight to variously curved or coiled, green or purple, concave, 1–3 veined, linear, 5–40 × 0.2–0.4 mm, flexuous, margins not thickened, often scarious, sometimes ciliate or stipitate-glandular, apex green to purple, acute, navicular, dull, glabrous to stipitate-glandular;

axillary leaves present proximally.

solitary flowers, axillary or terminal (rarely present);

bracts absent.

7–15+-flowered, open cymes;

bracts subulate, scarious.

0.1–2 cm, glabrous.

0.2–4 cm, stipitate-glandular.

hypanthium disc-shaped;

sepals 1-veined, oblong-ovate (herbaceous portion usually purple, oblong-ovate), 1.5–2.5 mm, not enlarging in fruit, apex often purple, obtuse to acuminate, navicular, not hooded, glabrous;

petals obovate to spatulate, 1.5–2 times as long as sepals, apex obtuse, entire.

hypanthium disc-shaped;

sepals 1(–3)-veined, midvein often more prominent than lateral veins, ± ovate (herbaceous portion lanceolate to oblong-lanceolate to narrowly ovate), 2.5–3.7 mm, not enlarging in fruit, apex often purple, obtuse to acute, not hooded, stipitate-glandular at least proximally;

petals ovate, (1–)1.7–2.1 times as long as sepals, apex broadly rounded, entire or irregularly dentate.

on stipe ca. 0.1–0.2 mm, spheric, 1.5–2.5 mm, equaling sepals.

on stipe 0.3–0.5 mm, broadly ovoid, 4 mm, longer than sepals.

brown, suborbiculate, compression unknown, ca. 0.6 mm, obscurely reticulate.

reddish brown, winged, orbiculate with radicle not prolonged, compressed, 1.3–2 mm, tuberculate;

tubercles low, elongate.

= 58 (Russia), 60.