Flora of North America species comparison

erect, simple proximal to inflorescence or with few basal branches, branched distally, to 75 cm.

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

2 per node, gradually reduced distally;

basal blades oblanceolate, 6–12(–14) cm × 20–45 mm;

cauline blades ascending, conspicuously veined, broadly elliptic to lanceolate, 1–11 cm × 3–40 mm, apex acute, shortly acuminate, densely pubescent on both surfaces.

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.

cymose, 3–15-flowered, bracteate;

cyme open, flowers held on ascending branches;

bracts leaflike, narrowly lanceolate, 1–5 cm, apex acuminate.

(1–)3–7-flowered, open, bracteate;

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

ascending, straight, 1/3–3 times longer than calyx.

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

nocturnal, 20–25 mm diam.;

calyx prominently 10-veined, ovate-elliptic, fusiform, narrowed to both ends and constricted around carpophore, 15–24(–40) × ca. 3 mm in flower, swelling to 10 mm diam. in fruit, thin and papery, margins dentate, with pale commissures;

lobes erect, often recurved in fruit, linear-lanceolate, long, narrow, (3–)5–10(–15) mm, apex acuminate, short-pubescent, glandular, interspersed with long eglandular hairs, veins anastomosing;

corolla white, often pink tinged, clawed, claw equaling calyx lobes, limb deeply 2-lobed, lobes usually narrow, appendages 0.5–1.5 mm broad, margins entire or erose;

stamens shorter than petals;

styles 3, shorter 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.

ovoid, constricted at mouth, equaling or slightly longer than calyx tube, opening by 6 recurved teeth;

carpophore 1–3 mm.

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

carpophore 2–3 mm.

dark brown to black, with gray bloom, broadly reniform, 0.8–1 mm, strongly tuberculate.

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

= 24.

= 48, 96.