Flora of North America species comparison

filiform.

stout, woody.

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

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

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

3–5-flowered, open cymes;

bracts lanceolate, herbaceous.

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

0.5–1 cm, usually densely 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 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.

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

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

= 26.