Flora of North America species comparison

1–few, erect, unbranched (rarely branched), 30–125 cm, tomentose to puberulent with curved trichomes, not glaucous, rhizomatous.

1–8, decumbent, unbranched or branched near base, 4–13 cm, densely puberulent with curved trichomes, not glaucous, rhizomatous.

opposite, petiolate, with 1 or 2 stipular colleters on each side of petiole, sometimes also in axil;

petiole 4–12 mm, tomentose to pilose;

blade lanceolate or ovate to oblong, 6–20 × 2–14 cm, chartaceous, base rounded to truncate or cordate, margins entire, apex acute to obtuse, sometimes mucronate, venation faintly brochidodromous, surfaces tomentose to pilose, margins ciliate, 6–32 laminar colleters.

opposite and alternate, petiolate, with 0 or 1 stipular colleter on either side of petiole;

petiole 2–5 mm, margins puberulent with curved trichomes;

blade lanceolate to ovate, 2–5 × 0.5–2 cm, chartaceous, base obtuse to cuneate, margins entire, apex acute to attenuate, venation eucamptodromous, surfaces sparsely pilosulous to glabrate, persistent on veins, margins densely ciliate, laminar colleters absent.

extra-axillary, pedunculate, 3–34-flowered;

peduncle 1–10 cm, densely tomentose, with 1 caducous bract at the base of each pedicel.

terminal and extra-axillary at upper nodes, sessile, 3–8-flowered, bracts few.

13–30 mm, densely tomentose.

11–24 mm, densely pilosulous.

erect to pendent;

calyx lobes elliptic, 4–8 mm, apex acute, tomentose;

corolla dark pink (rarely pale), lobes reflexed with spreading tips, elliptic, 9–12 mm, apex acute, densely pilose abaxially, hirtellous at base adaxially;

gynostegial column 0.5–1 mm;

fused anthers green and brown, truncately obconic, 2.5–3 mm, wings right-triangular, open, widely so at base, apical appendages deltoid;

corona segments pale pink to nearly cream, sessile, scoop-shaped, 9–15 mm, exceeding style apex, apex truncate with proximal tooth on each side and long-attenuate, flared, glabrous, internal appendage subulate, exserted, sharply inflexed over style apex, glabrous;

style apex shallowly depressed, green to cream or pink.

erect;

calyx lobes elliptic, 2–2.5 mm, apex acute, pilose;

corolla red-violet, lobes reflexed with spreading tips, oval, 4–5 mm, apex acute, glabrous;

gynostegial column 0.2–0.5 mm;

fused anthers brown, cylindric, 1.5–2 mm, wings narrowly right-triangular, apical appendages ovate, erose;

corona segments red-violet dorsally, white to orange proximally, sessile, cupulate, 1.5–2 mm, slightly exceeded by style apex, apex truncate with a proximal tooth on each side, glabrous, internal appendage falcate, barely exserted from cavity, glabrous;

style apex shallowly depressed, pink to red-violet.

ovate, 7–9 × 4–5 mm, margin winged, faces rugulose;

coma 2.5–3 cm.

broadly ovate, 8–9 × 6–7 mm, margin winged, erose, faces densely rugulose, lepidote;

coma 1–1.5 cm.

erect on upcurved pedicels, lance-ovoid, (5–)9–12 × 2–3 cm, apex long-attenuate, muricate or smooth, densely tomentose.

erect on upcurved pedicels, ovoid, 3–5 × 0.7–1 cm, apex acuminate, smooth, pilosulous to tomentulose.

= 22.