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.

erect to ascending, green, 10–30 cm, minutely retrorsely pubescent proximally, flowering stems stipitate-glandular, usually densely so, internodes of flowering stems 3–5 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 (vegetative), variably spaced (cauline), usually connate proximally, with tight, scarious to herbaceous sheath 0.5–1.8 mm;

blade straight to outwardly curved, green, flat, 3-veined abaxially, midvein more prominent than 2 lateral veins, filiform-linear, 10–18 × 0.8–1.3 mm, flexuous, margins not thickened, scarious, ciliate, often sparsely so, apex green, often with white callosity, acuminate-pungent, flat to slightly navicular, shiny, glabrous;

axillary leaves present among vegetative leaves.

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

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

3–13-flowered, open cymes;

bracts lanceolate, herbaceous.

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

2–5 cm, 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 prominently 3-veined, lanceolate to oblong-lanceolate (herbaceous lanceolate to oblong-lanceolate), 6–8 mm, not enlarging in fruit, apex green to purplish, rounded, hooded, stipitate-glandular, especially proximally;

petals oblanceolate, 1.3–1.5 times as long as sepals, apex rounded, entire.

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

narrowly ellipsoid, 7–10 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.

reniform, ca. 1 mm, tuberculate.