Flora of North America species comparison

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

1–many, erect, simple, slender, 10–30 cm, glandular-pubescent.

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.

connate basally, blade ciliate at base, pubescent on both surfaces;

basal numerous, ± petiolate, blade linear-oblanceolate, 1–5 cm × 1–5 mm, somewhat fleshy, apex ± acute;

cauline in 1–3 pairs, sessile, blade linear to linear-lanceolate, 1–4 cm × 1–3 mm, apex ± acute.

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

cymose, terminal, (1–)3-flowered, rarely with 1–2 flowers at proximal nodes, bracteate, bracteolate;

bracts and bracteoles leaflike, 2–10 mm.

usually shorter than calyx, rarely much longer, densely pubescent with purple-septate glandular hairs but not 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, elliptic to campanulate, not inflated, not or slightly contracted at mouth, 8–9 × 3–5 mm in flower, 10–12 × 5–6 mm in fruit, to 2 times as long as broad, papery, veins green or purple, densely pubescent, with purple-septate hairs, lobes spreading, lanceolate-triangular, ca. 2 mm, margins purple tinged, round, broad, membranous;

corolla white to pink, clawed, ca. 11/4 times longer than calyx, claw equaling calyx, limb not differentiated from claw, obovate, emarginate to 2-lobed, shorter than calyx, appendages 2, ca. 1 mm;

stamens equaling petals;

styles 5, equaling petals.

equaling calyx, opening by 6 teeth;

carpophore less than 1 mm.

ovoid-ellipsoid, slightly longer than calyx, opening by 5 recurved teeth;

carpophore shorter than 1 mm.

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

brown, not winged, reniform, angular, less than 1 mm broad, finely papillate.

= 24.

= 24, 48, 72.