Flora of North America species comparison

stout, woody.

stout, woody.

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

suberect to ascending, green, 2–10-cm, retrorsely pubescent in lines, internodes of flowering stems 2–7 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.

tightly overlapping or not (vegetative and proximal cauline) or variably spaced (distal cauline), usually connate proximally, with tight, scarious to herbaceous sheath 0.5–1 mm;

blade straight to outwardly curved, green, flat, obscurely 1-veined abaxially, oblong or spatulate to elliptic, 5–10 × 0.7–2 mm, flexuous, margins not thickened, scarious, rarely ciliate proximally, apex green or purple, rounded, flat to navicular, shiny, glabrous;

axillary leaves mostly absent.

solitary flowers, axillary or terminal (rarely present);

bracts absent.

3–5-flowered, open cymes;

bracts lanceolate, herbaceous.

0.1–2 cm, glabrous.

0.5–1 cm, usually densely 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 cup-shaped;

sepals 3-veined prominently in fruit, oblong to narrowly lanceolate (herbaceous portion often purple, oblong to narrowly oblanceolate), 3.5–4.5 mm, not enlarging in fruit, apex rarely purple, rounded, hooded (at least inner sepals) or not, glabrous to stipitate-glandular proximally;

petals white or often lilac, broadly oblanceolate, 1.4–1.7 times as long as sepals, apex truncate, often shallowly notched.

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

broadly ellipsoid, 5.5 mm, longer than sepals.

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

brown, suborbiculate with radicle prolonged into beak, slightly compressed, 0.7–0.8 mm, smooth or obscurely scupltured (50x).

= 58 (Russia), 60.

= 26.