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, 3–10 cm, glabrous or sometimes stipitate-glandular, internodes of flowering stems 1–5 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 1–1.5 mm;

blade straight to outwardly curved, green, flat, 3-veined, often prominently so abaxially, linear to oblong or narrowly lanceolate, 4–14 × 0.5–2 mm, flexuous, margins thickened, ± coriaceous, ciliate, often densely so, apex green, rounded, navicular, shiny, glabrous or essentially so throughout or abaxially, sometimes pubescent adaxially, hairs resembling cilia;

axillary leaves present among vegetative leaves.

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

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

solitary flowers, terminal;

bracts linear, herbaceous.

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

0.4–1 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 prominently 3-veined proximally, lanceolate to oblong (herbaceous portion often purple, lanceolate to oblong), 4.5–6 mm, to 9 mm in fruit, apex often purple, rounded, hooded, stipitate-glandular;

petals broadly obovate, 1.2–1.6 times as long as sepals, apex blunt or rounded, entire.

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

narrowly ellipsoid, 10–18 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.

red-brown to brown, orbiculate with radicle prominent and notch filled with papillae, somewhat compressed, 1–1.1 mm (excluding papillae), rounded-tuberculate, ringed with longitudinal, cylindrical, tan papillae 0.5–0.8 mm.

= 44 (Russia), 46, 48 (Russia).