Flora of North America species comparison

ascending, decumbent at base, branched, shortly rhizomatous, to 80 cm, softly pubescent, ± glandular, at least distally, rarely subglabrous.

simple, branched in inflorescence, (10–)20–40(–70) cm.

sessile at mid and distal stem, petiolate to spatulate proximally;

petiole equaling or longer than blade of basal leaves;

blade ovate to elliptic, 3–13 cm × 10–50 mm (not including petiole), apex acute to acuminate, sparingly pubescent, densely so on abaxial midrib.

basal withering before flowering, blade lanceolate-spatulate, 2–5 cm;

cauline sessile to amplexicaulous, blade lanceolate to ovate or elliptic, 1–6 cm × 5–25 mm, apex acute.

dichasial cymes, several- to many-flowered, open, bracteate;

bracts lanceolate, 4–20 × 2–7 mm, herbaceous, softly hairy throughout with long-septate hairs, not glandular, or with some glandular hairs.

cymose, bracteate;

cyme capitate or with flowers clustered at end of slender branches;

bracts lanceolate-acicular, 2–10 mm.

ascending, 0.2–3 cm, usually shorter than calyx.

0.1–0.5 cm.

unisexual, some plants having only staminate flowers, others having only pistillate flowers, 20–25 mm diam.;

calyx 8–12-veined, campanulate, narrowly so in staminate flowers, broadly in pistillate, 10–15 × to 7 mm in flower, 11 mm broad in fruit, herbaceous, margins dentate, softly pubescent, lobes 5, erect, lanceolate, 2–3 mm;

petals bright pink, clawed, claw equaling or longer than calyx, limb spreading horizontally, broadly obovate, unlobed or 2-lobed, to 12 × 12 mm, appendages 4, ca. 1 mm;

stamens and stigmas equaling petal claw;

styles 5.

calyx usually purple tinged, 10-veined, elongate, clavate, lobed, constricted proximally into narrow tube, 13–17 × 2.5–4 mm, rather membranous;

lobes ovate-triangular, ca. 1 mm, apex obtuse;

petals pink (rarely white), unlobed, limb obovate, ca. 5 mm, base cuneate into claw 6–8 mm, auricles absent, appendages linear to lanceolate, 2–3 mm, apex acute;

stamens slightly longer than petal claws;

styles 3(–4), exserted.

broadly ovoid to globose, equaling and often splitting calyx, opening by 5 (splitting into 10) revolute teeth;

carpophore absent.

oblong, 7–10 mm, opening by 6 (or 8) spreading teeth;

carpophore 7–8 mm, glabrous.

dark brown to black, broadly reniform, plump, 1–1.6 mm, densely and evenly papillate.

dark brown, reniform-rotund, less than 1 mm diam., rugose.

= 24.

= 24 (Europe).