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, branched, leafy, 20–60 cm, villose-tomentose, viscid-glandular.

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, connate proximally, sessile, largest in mid stem;

blade lanceolate, 3–7 cm × 5–15 mm, apex acute, glandular-tomentose throughout.

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

open, leafy cymes, bracteate, viscid and glandular-tomentose, branches ascending, mostly floriferous, flowers terminal and at distal nodes;

bracts leaflike, 5–30 mm.

shorter than calyx.

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 obscurely 10-veined, tubular-campanulate, 10–15 × 4–5 mm in flower, becoming clavate and 15–20 × 6–8 mm in fruit, narrowed toward base around carpophore, herbaceous, viscid-pubescent, veins more distinct at base, without conspicuous pale commissures, lobes narrowly lanceolate, 3–6 mm, margins very narrow, membranous, apex blunt;

corolla greenish white, clawed, claw equaling calyx, widened distally, limb emarginate, 2 × 4 mm, appendages 4(–6), ca. 0.5 mm;

stamens equaling petals;

styles 3, equaling petals.

equaling calyx, opening by 6 teeth;

carpophore less than 1 mm.

ellipsoid, slightly longer than calyx, opening by 6 teeth;

carpophore 1.5–2.5 mm.

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

yellowish brown, winged, reniform, ca. 2 mm, rugose;

wing broad, wrinkled.

= 24.

= 48.