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 or 2+, erect, unbranched, 35–175 cm, glabrous, glaucous, rhizomes absent.

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, sessile, with 1 stipular colleter on each side of leaf base;

blade broadly ovate or oval to oblong, 6–14 × 3–7 cm, chartaceous, base cordate, clasping, margins often crisped, apex rounded to truncate, emarginate, or obtuse, sometime mucronate, venation eucamptodromous to brochidodromous, surfaces glabrous, glaucous, margins minutely ciliate, 6–16 laminar colleters.

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

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

terminal (extra-axillary at upper nodes), pedunculate, 18–53-flowered;

peduncle occasionally branched, 5–40 cm, glabrous, glaucous, with 1 caducous bract at the base of each pedicel.

13–30 mm, densely tomentose.

20–55 mm, puberulent with curved trichomes.

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 to spreading;

calyx lobes narrowly lanceolate, 3–5 mm, apex attenuate, sparsely pilosulous to glabrate;

corolla green, often tinged red, purple, or bronze, lobes reflexed, lanceolate, 8–11 mm, apex acute, glabrous;

gynostegial column 1.5–2.5 mm;

fused anthers green, obconic, 2.5–3.5 mm, wings right-triangular, open at base, apical appendages rhomboid;

corona segments reddish purple to cream, stipitate, tubular, 4–6 mm, exceeding style apex, apex truncate, erose, glabrous, internal appendage falcate, exserted, sharply inflexed over style apex, glabrous;

style apex shallowly depressed, green.

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

coma 2.5–3 cm.

ovate, 9–10 × 6–7 mm, margin winged, faces minutely rugulose;

coma 2.5–3 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, fusiform to narrowly lance-ovoid, 9–16 × 1–2 cm, apex long-acuminate, smooth, pilosulous.

= 22.