Flora of North America species comparison

1–numerous, erect to ascending, branched in inflorescence, 15–90 cm, densely hirsute, not glaucous, rhizomes absent.

1–few, erect, unbranched, 30–120 cm, puberulent with curved trichomes, sometimes in a single line, sometimes glaucous, rhizomes absent.

alternate, petiolate, with 1 or 2 stipular colleters on each side of petiole;

petiole 1–4 mm, densely hirsute;

blade elliptic, oblong, or oblanceolate to lanceolate or linear, 2–12 × 0.3–3 cm, chartaceous, base cuneate or obtuse to rounded, truncate, hastate, or cordate, margins entire, apex acute to attenuate or obtuse to rounded, venation brochidodromous to eucamptodromous, surfaces hirsute, more densely so on midvein abaxially, margins ciliate, 0–4 laminar colleters.

opposite, petiolate, with 1 or 2 stipular colleters on each side of petiole;

petiole 10–25 mm, puberulent with curved trichomes;

blade oval to ovate, obovate, lanceolate, or oblanceolate, 6–15 × 3–9 cm, subcoriaceous, base cuneate to obtuse or subtruncate, margins sometimes crisped, apex rounded to obtuse, apiculate or mucronate, venation eucamptodromous to faintly brochidodromous, surfaces puberulent on veins with curved trichomes, sometimes glaucous, margins ciliate, 8–12 laminar colleters.

corymbs of extra-axillary umbels on branches, sessile or pedunculate, 5–27-flowered;

peduncle 0–4 cm, sometimes branched, hirsute, with 1 caducous bract at the base of each pedicel.

terminal, branched, also usually extra-axillary at 1 distal node, pedunculate, 11–28-flowered;

peduncle 1–7 cm, densely puberulent with curved trichomes, with 1 caducous bract at the base of each pedicel.

9–24 mm, puberulent with curved trichomes to pilosulous.

12–20 mm, densely puberulent with curved trichomes.

erect;

calyx lobes narrowly lanceolate, 2–3 mm, apex acute, hirsute to puberulent with curved trichomes;

corolla reddish orange (nearly red) to orange or yellow, lobes reflexed with spreading tips, narrowly elliptic, (5–)6–8 mm, apex acute, glabrous abaxially, minutely papillose at base adaxially;

gynostegial column 1.2–1.5 mm, fused anthers yellow to yellowish green, cylindric, 2–3 mm, wings right-triangular, closed, apical appendages ovate;

corona segments reddish orange (nearly red) to orange or yellow, substipitate, conduplicate, dorsally flattened, sulcate, 5.5–7 mm, greatly exceeding style apex, apex acute, glabrous, internal appendage subulate, exserted, arching above style apex, glabrous;

style apex shallowly depressed, yellow to yellowish green.

erect to spreading;

calyx lobes lanceolate, 2–3 mm, apex acute, pilosulous;

corolla white, red-violet in throat, lobes reflexed with spreading tips, elliptic, 6–8 mm, apex acute, glabrous abaxially, minutely papillose at base adaxially;

gynostegial column red-violet, 1–2 mm;

fused anthers brown, truncately obconic, 1.5–2 mm, wings right-triangular, rounded, closed, apical appendages ovate;

corona segments white, stipitate, conduplicate with a lateral flange on each side, 2.5–4 mm, exceeding style apex, apex truncate, glabrous, internal appendage falcate, exserted, sharply inflexed over style apex, glabrous;

style apex shallowly depressed, white.

ovate, 8–9 × 4–5 mm, margin winged, faces minutely rugulose;

coma 3–5 cm.

ovate, 5–7 × 3–5 mm, margin winged, faces rugulose;

coma 2.5–4 cm.

erect on upcurved pedicels, fusiform, 7–14 × 1.2–2 cm, apex long-acuminate or attenuate, smooth, hirsute.

erect on upcurved pedicels, narrowly fusiform, 10–15 × 1.5–2 cm, apex long-acuminate, smooth, pilosulous.

= 22.