Flora of North America species comparison

filiform.

filiform to slightly thickened.

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

ascending to erect, green, 3–10 cm, glabrous, internodes of all stems 2–4 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.

overlapping proximally (basal rosette), perfoliate, connate proximally, with ± tight, herbaceous to scarious sheath 0.5–1 mm;

blade erect to spreading, green, weakly 1-veined abaxially, flat, ± linear, 4–12(–15) × 0.5 mm, flexuous, margins not thickened, slightly scarious to herbaceous, smooth, apex green, rounded, dull, glabrous;

axillary leaves absent.

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

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

3–5-flowered, open, leafy cymes or sometimes solitary, terminal;

bracts linear to subulate, mostly herbaceous.

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

0.2–1(–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 obscurely veined, elliptical-oblong to obovate (herbaceous portion elliptical-oblong to obovate), 2–4.5 mm, not enlarging in fruit, apex green, obtuse to rounded, not hooded, glabrous;

petals clawed, broadly obovate, 2–2.2 times as long as sepals, apex rounded, shallowly notched.

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

on stipe shorter than 0.1 mm, broadly ellipsoid, 5.5 mm, longer than sepals.

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

brown, obliquely triangular with adaxial groove, radicle prolonged into short beak, compressed, 0.5–0.8 mm, obscurely tuberculate.

= 20.