Flora of North America species comparison

erect, branched distally, with 2–4 pairs of reduced leaves, 15–50 cm; flowering shoots usually subscapose, coarsely pubescent with hairs colorless, septate, and long, viscid-glandular, especially distally.

several–many, erect, branched and decumbent at base, rarely simple, 20–80 cm.

mostly basal;

basal long-petiolate, blade oblanceolate to elliptic, 6–15 cm × 10–30 mm, narrowed to base, not fleshy;

cauline few, sessile, reduced distally, blade lanceolate, 0.8–4 cm × 3–8 mm, not fleshy.

mainly cauline, 2 per node, sessile, almost clasping, reduced proximal to inflorescence, blade broadly oblong to oblanceolate or lanceolate, rarely ± linear, 2–8 cm × 5–30 mm, base round, apex acute to acuminate.

thyrsate, subscapose, rarely simple, (3–)5–12(rarely more)-flowered, open, bracteate, bracteolate, densely pubescent, glandular, viscid; alternate branches often suppressed or developing unevenly;

proximal nodes often with single flower;

bracts and bracteoles resembling stem leaves but much reduced.

open dichasial cyme, 5–40-flowered, bracteate;

bracts much-reduced, lanceolate.

1/4–2 times length of calyx.

0.5–3 cm.

calyx prominently 10-veined, veins parallel, those of lobes broadened distally, tubular in flower, 10–13 × 2.5–4 mm, campanulate-ovate in fruit, broadest near middle and contracted towards mouth, not contracted proximally, 12–18 × 5–8 mm, with pale commissures, lobes 5, erect, narrowly lanceolate, 4–6 mm, margins narrow, membranous proximally, apex blunt, with glandular hairs;

petals 11/2–2 times longer than calyx tube;

corolla pink, clawed, claw equaling calyx tube, limb obovate, deeply 2-lobed, 5–10 mm, appendages 2, linear, ca. 1.5 mm;

stamens exserted, shorter than petals;

styles 3–5, included in calyx, ± equaling calyx or corolla.

bisexual and unisexual, some plants having bisexual flowers, others having pistillate unisexual flowers, 15–20 mm diam.;

calyx pale green, rarely purplish, campanulate, not contracted at mouth or base, inflated, 9–12 mm in flower, 12–18 × 7–11 mm in fruit, herbaceous, papery, venation obscure, reticulate, without conspicuous pale commissures, margins dentate, lobes broadly triangular, 2–3 mm, glabrous;

petals white, ca. 2 times as long as calyx;

limb obovate, emarginate to 2-lobed;

stamens exserted by 2–4 mm;

styles 3, cream to greenish, at most slightly pink tinged, 2 times longer than calyx.

conic to ellipsoid, equaling calyx lobes, opening by 6–10 recurved teeth;

carpophore 1–2 mm.

ovoid to globose, equaling calyx, opening by 6 teeth;

carpophore 2–3 mm.

dark brown, reniform, 1–1.5 mm, prominently papillate;

papillae larger around margins.

black or nearly so, globose-reniform, 1–1.5 mm, finely tuberculate.

= 48.

= 24.