Flora of North America species comparison

several, simple proximal to inflorescence, 30–80 cm, puberulent, becoming subglabrous near base.

erect, simple, (10–)20–60 cm, softly puberulent, viscid-glandular distally.

withering proximally, in whorls of 4, ± sessile to short-petiolate, largest in mid-stem region;

blade lanceolate to ovate-lanceolate, 3–10 cm × 4–40 mm, apex acuminate, puberulent on both surfaces, sparsely so adaxially.

mostly basal;

basal petiolate, blade oblanceolate, spatulate, 3–8 cm × 2–14 mm, not fleshy, margins shortly ciliate, apex ± acute, glabrous to puberulent on both surfaces;

cauline usually in 2–4 pairs, blade narrowly oblanceolate, lanceolate to linear-lanceolate, 0.2–0.8 cm × 10–80 mm, not fleshy, puberulent on both surfaces, at least distal ones glandular.

paniculate, open, bracteate, bracteolate, branches elongate, puberulent;

bracts and bracteoles linear-lanceolate, 2–15 mm.

(1–)3–7-flowered, open, bracteate;

bracts linear-lanceolate, broadened at base, 2–10 mm.

straight, often with 1 or 2 pairs of bracteoles, slender, 1/2–3 times calyx, glabrous or scabrous-puberulous.

ascending, usually longer than calyx, puberulent, viscid stipitate-glandular.

calyx obscurely 10-veined, broadly campanulate, becoming obtriangular in fruit, 7–11 × 6–10 mm, herbaceous, margins dentate, very narrow, membranous, sparsely puberulent, lobes broadly triangular, 2–3 mm;

corolla white, ca. 2 times longer than calyx, limb obtriangular, narrowed into claw, divided ca. 1/2 its length into 4–12 lobes, appendages absent;

stamens equaling petals;

styles 3, longer than petals.

calyx prominently 10-veined, campanulate, inflated, ± umbilicate, not or only slightly constricted toward base, (10–)12–16 × 7–9 mm in fruit, glandular-pubescent, strongly viscid, veins parallel, purplish, with pale commissures, not much broadened distally, commissural veins slender, forked distally and fused to those of lobes, lobes ovate to broadly triangular with lanceolate midrib, 2–3 mm, margins purple tinged, broad, membranous;

corolla white, often tinged green or purple, clawed, claw equaling calyx, glabrous, broadened distally, limb deeply 2-lobed, rarely 4-lobed, 5–7 mm, lobes with 2 prominent lateral teeth, appendages 2(–4), 1.5–2 mm;

stamens equaling calyx;

stigmas 3(–5), exserted.

globose, opening by 3 broadly triangular teeth;

carpophore 2–3 mm.

included in calyx, opening by 3(–5) teeth, each tardily splitting into 2;

carpophore 2–3 mm.

dark brown, reniform, ca. 1 mm, papillate.

brown, not winged, broadly reniform and often flattened, 1.5–2.5 mm, rugose to shallowly tuberculate on sides, larger tubercules on margins.

= (34), 48.

= 48, 96.