Flora of North America species comparison

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

erect, simple proximal to inflorescence, slender or stout, 10–80 cm, puberulent.

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 oblanceolate, 6–25 cm × 4–30 mm, retrorsely puberulent on both surfaces;

cauline in 1–12 pairs, usually sessile, blade well developed, lanceolate to ovate-lanceolate, oblanceolate, or rarely linear or linear-lanceolate.

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

cymose, pseudo-racemose, or rarely paniculate, erect or nodding, with 1–12 flowering nodes, 2–20-flowered, open or dense, flowers paired or in many-flowered whorls, bracteate, cymes often sessile;

bracts 3–60 mm.

becoming deflexed at base of calyx, 1/4–2 times calyx, glandular-pubescent.

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.

shortly pedicellate or sessile;

calyx prominently 10-veined, campanulate or tubular in flower, clavate, turbinate, or fusiform in fruit, constricted or not at base around carpophore in fruit, 8–20 × 3–8 mm, veins parallel, purplish or green, with pale commissures;

lobes lanceolate, 2–5 mm, apex obtuse with broad membranous margin and tip;

corolla white, greenish white, or pink, sometimes tinged pink or purple, clawed, claw longer than calyx, limb deeply 2–4-lobed, often with smaller lateral teeth, 2.5–8 mm, appendages 1–3 mm;

stamens ± equaling corolla claw;

styles 3–4, ± equaling corolla claw.

equaling calyx, opening by 6 teeth;

carpophore less than 1 mm.

ovoid to ellipsoid, equaling or slightly longer than calyx, opening by 6 or 8 teeth;

carpophore 1.5–6 mm.

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

brown or grayish brown, reniform, 1–1.5 mm, margins papillate, rugose on sides.

= 24.