Flora of North America species comparison

erect, simple or branched, slender, to 80 cm, subglabrous to retrorsely puberulent especially proximally, distal internodes frequently glutinous.

usually several–many, rarely 1, erect, leafy, 10–55 cm, base often decumbent with marcescent leaf bases, scabrous-puberulent to pubescent, usually ± viscid-glandular distally, rarely densely so.

2 per node;

blade with margins ciliate toward base, apex acute to obtuse;

basal blades oblanceolate, spatulate;

cauline narrowly oblanceolate to linear, 1–9 cm × 2–15 mm, scabrous or puberulent, rarely glabrous on both surfaces.

2 per node;

basal petiolate, blade linear-lanceolate to lanceolate, 3–10 cm × 2–13 mm (including petiole), apex acute, glabrous to scabrous-puberulent or softly pubescent, petiole often ciliate;

cauline sessile or petiolate, connate proximally, reduced distally, blade linear to narrowly lanceolate, 2–10 cm × 2–8 mm.

cymose, open, branches usually ascending, several- to many-flowered, 1-flowered in depauperate specimens.

cymose with elongate ascending branches, open, flowers (1–)3 to many, bracteate, bracteolate;

bracts and bracteoles lanceolate, 3–20 mm, apex acuminate.

1/4–3 times longer than calyx, scabrous-puberulous to pubescent and glandular, ± viscid.

mature calyx prominently 10-veined, campanulate to ovate, 5–9 × 3–5 mm, margins dentate, glabrous, veins parallel, with pale commissures;

lobes usually purple, triangular, acute, ca. 1 mm;

petals white, often suffused with dark red, rarely wholly dark red, limb ovate, usually 2-lobed, ca. 2.5 mm, slightly longer than calyx, rarely petals absent, claw narrow, appendages 0.1–0.4 mm;

stamens included;

styles 3;

stigmas included.

calyx prominently 10-veined, tubular in flower, ± clavate and contracted around carpophore in fruit, 10–14 × 4–6 mm, margins dentate, veins parallel, green (rarely purplish), with pale commissures, lobes ascending, lanceolate, 2–3 mm, margins usually with obtuse, membranous border, apex spreading, shortly glandular-pubescent, usually viscid;

corolla off-white (greenish) to dusky pink, clawed, claw equaling calyx, limb obovate, 2-lobed, 3–7 mm, shorter than claw, rarely with small lateral teeth, appendages 2, usually lacerate, 1–2 mm;

stamens ca. equaling petals;

styles 3(–4), often much longer than petals.

equaling calyx, opening by 6 teeth;

carpophore less than 1 mm.

ovoid-ellipsoid, slightly longer than calyx, opening by 6 (or 8) recurved teeth;

carpophore 2–5 mm.

dull gray-black, reniform, 0.5–0.8 mm diam., finely papillate.

dark reddish brown to black, reniform, ca. 1.5 mm, papillate, with larger papillae around margins.

= 24.

= 48.