Flora of North America species comparison

filiform.

moderately stout, not woody.

erect to ascending, green, 5–20 cm, stipitate-glandular, often densely so, internodes of all stems 1–3 times as long as leaves.

spreading to erect, cespitose, green, 3–15 cm, glabrous, internodes of all stems 0.2–0.6 times as long as leaves.

overlapping proximally, perfoliate proximally, with ± loose, scarious to herbaceous sheath 0.5–1 mm;

blade green, flat, 1-veined, oblanceolate to cuneate (proximal) to oblong-lanceolate to ovate (remaining cauline), 5–30(–35) × 2–4 mm, flexuous, margins not thickened, ± scarious, smooth, apex green to purple, obtuse to abruptly pointed, dull, glabrous;

axillary leaves absent.

tightly overlapping, usually connate proximally, with ± loose, scarious to herbaceous sheath 0.2–0.8 mm;

blade straight to outwardly curved, green, flat, prominently 1-veined abaxially, linear to subulate, 3–10 × 0.1–1 mm, flexuous, margins not thickened, scarious, smooth, apex green or purple, rounded, navicular, shiny, glabrous;

axillary leaves present among cauline leaves.

7–12-flowered, open cymes, or rarely solitary, terminal;

bracts ± lanceolate, herbaceous, sometimes scarious-margined proximally.

flowers solitary, terminal;

bracts linear to subulate, herbaceous.

reflexed in fruit, 0.5–2.5 cm, stipitate-glandular.

0.3–1.5(–2) cm, glabrous.

hypanthium disc-shaped;

sepals obscurely veined, ovate to broadly elliptic (herbaceous portion ovate to broadly elliptic), 3–6 mm, to 7 mm in fruit, apex green or purple, acute to acuminate, not hooded, stipitate-glandular;

petals obovate to oblanceolate, 2–2.5 times as long as sepals, apex rounded, broadly notched.

hypanthium disc-shaped, sepals prominently 3-veined, linear to lanceolate (herbaceous portion linear to lanceolate), 2–3 mm, enlarging slightly in fruit, apex usually purple, acute or rounded, not hooded, glabrous;

petals usually absent, if present, rudimentary, linear to oblong, shorter than sepals, apex entire.

sessile, broadly ellipsoid, 6–7.5 mm, equaling or longer than sepals.

ellipsoid, 2–3 mm, equaling sepals.

dark brown to blackish, orbiculate with radicle prolonged into beak, only slightly compressed, 0.7–0.8 mm, echinate with rounded tubercles.

0.6–1 mm, brown, suborbiculate with radicle prolonged into beak, somewhat compressed, minutely tuberculate (50x).

= 30.