Flora of North America species comparison

filiform to somewhat thickened.

moderately stout, woody.

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

ascending to erect, green, 5–20 cm, glabrous except in inflorescence, glaucous, internodes of stems 0.5–4 times as long as leaves (proximal leaves longer than internodes);

rhizomes and trailing stems 5–20 cm.

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.

loosely overlapping proximally, ± evenly spaced, connate proximally, with tight, scarious sheath 0.2–0.6 mm;

blade straight or outwardly curved, green, shallowly concave (dorsiventrally flattened, curved into trough), 1-veined abaxially, needlelike, 4–15 × 0.5–1.2 mm, ± flexuous, margins not thickened, scarious in proximal 1/5, smooth, apex green to purple, acute to obtuse, sometimes apiculate, navicular, dull, glabrous, glaucous;

axillary leaves well developed among proximal cauline leaves.

7–15+-flowered, open cymes;

bracts subulate, scarious.

12–25-flowered, open cymes;

bracts subulate, herbaceous, margins scarious proximally.

0.2–4 cm, stipitate-glandular.

0.4–3 cm, often stipitate-glandular.

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.

hypanthium disc-shaped;

sepals obscurely 1-veined, narrowly ovate to lanceolate (herbaceous portion narrowly ovate to lanceolate), 2.5–4 mm, not enlarging in fruit, apex green to purple, acute to acuminate, not hooded, glabrous or very sparsely stipitate-glandular;

petals oblanceolate to narrowly oblong-elliptic, 1.4–2.2 times as long as sepals, apex rounded, entire.

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

sessile, ovoid, 3.5–4.3 mm, longer than sepals.

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

tubercles low, elongate.

reddish brown to brown, oblong-elliptic, compressed, 2.3–2.8 mm, tuberculate;

tubercles low, rounded.