Flora of North America species comparison

filiform.

filiform.

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

erect to ascending, green, 5–30 cm, glabrous or sometimes stipitate-glandular distally or throughout, internodes of all stems 1–7 times as long as leaves; wintering stems absent.

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.

overlapping proximally, connate proximally, with loose, scarious to herbaceous sheath 0.1–0.5 mm;

blade straight to variously curved, green, flat, prominently 1-veined abaxially, linear, 2–20 × 0.5–1.5(–1.8) mm, flexuous, margins not thickened, herbaceous, smooth, apex green or purple, blunt to acute, flat, ± shiny, glabrous to stipitate-glandular;

axillary leaves absent.

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

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

5–30-flowered, open cymes;

bracts subulate to ovate, herbaceous.

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

0.3–3 cm, stipitate-glandular.

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 shallowly disc-shaped;

sepals prominently (3- or) 5-veined, narrowly to broadly lanceolate (herbaceous portion narrowly to broadly lanceolate), 4–5.5 mm, not enlarging in fruit, apex green or purple, narrowly acute to acuminate, not hooded, glabrous to sparsely stipitate-glandular;

petals obovate, 1.5–2.2(–3) times as long as sepals, apex rounded, broadly notched.

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

on stipe ca. 0.1 mm or shorter, narrowly ellipsoid, 3–4.2 mm, shorter than sepals.

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

reddish brown to black, suborbiculate, radicle obscure, slightly compressed, 0.5–0.6 mm, tuberculate;

tubercles low, rounded.