Flora of North America species comparison

erect, 5–40 cm, softly pubescent to scabrous, eglandular or viscid-glandular, especially distally, very rarely glabrous, with several pairs of leaves equaling or shorter than internodes.

usually simple proximal to inflorescence, 30–50(–70) cm, puberulent and shortly stipitate-glandular, especially distally.

sessile, or basal with short pseudopetiole;

blade linear to lanceolate or broadly ovate, base round to cuneate, apex acute to shortly acuminate, puberulent on both surfaces, sometimes glandular.

2 per node, gradually reduced distally;

basal petiolate, blade oblanceolate, spatulate, 5–9 cm × 7–15 mm (including petiole), apex acute to obtuse, usually glabrous adaxially, sparsely pubescent abaxially;

cauline in 4–6 pairs, blade linear-lanceolate, 1–6(–8) cm × 2–6 mm, puberulent and shortly stipitate-glandular.

usually with single dichotomy, rarely double, open, bracteate, branches often elongate, flowers 1 per node;

bracts foliaceous.

thyrsate, 3–25-flowered, open, bracteate, pedunculate, stipitate-glandular, viscid;

bracts narrowly lanceolate, 2–25 mm, apex acuminate.

sharply reflexed at base, especially after anthesis, equaling calyx.

ascending.

nodding;

calyx obscurely 10-veined, broadly campanulate, lobed, 6–8 mm, enlarging to 13–16 mm in fruit, herbaceous, usually with short, dense pubescence throughout, often glandular-viscid, veins green, rarely purplish tinged, conspicuous pale commissures absent;

lobes ovate-triangular, 1/2 to equaling tube, herbaceous;

petals creamy white, often greenish abaxially, rarely pink tinged to dusky pink (subsp. campanulata), clawed, to 2 times calyx, claw villose, limb deeply divided and fan-shaped with many narrow, linear lobes, lobes rapidly curling, margins deeply divided or erose, appendages 2–4, to 2 mm;

stamens exserted;

filaments hairy at base;

styles 3, to 2 times calyx.

calyx prominently 10-veined, narrowly campanulate, umbilicate, somewhat clavate and constricted below middle around carpophore, 9–15 × 3–4 mm in flower, broadening to 7 mm in fruit, membranous, shortly stipitate-glandular, veins parallel, slender, tinged dark red, with pale commissures, lobes ovate-lanceolate, obtuse, 2–3 mm, margins scarious;

corolla creamy white, sometimes pink tinged, clawed, claw equaling calyx, glabrous, broadening only slightly into limb 3–8 mm, limb with 4–6 linear lobes, some splitting to 10 linear segments, appendages 4–6, linear, 1–1.5 mm, apex acute;

stamens ca. equaling petals;

filaments glabrous;

stigmas 3(–5), ca. equaling petals.

ovoid, ca. equaling calyx and often splitting it, opening by 6 broadly triangular teeth;

carpophore 1–2.5 mm.

ellipsoid, slightly longer than calyx, opening by 6 (or 8 or 10) very brittle teeth;

carpophore 2–4 mm.

brown, reniform, 2–2.5 mm broad, coarsely and ± evenly papillate;

papillae ca. as long as broad.

brown, ± reniform, angular, glossy, shallowly tuberculate.

= 48.