Flora of North America species comparison

1–10, erect, unbranched, 25–100 cm, puberulent with curved trichomes or thinly tomentose to glabrate, sometimes glaucous, rhizomatous.

1–12, erect, unbranched to moderately branched below, 10–30 cm, puberulent with curved trichomes, not glaucous, rhizomatous.

opposite, sessile or petiolate, with 1–4 stipular colleters on each side of petiole, sometimes also in axil;

petiole 0–4 mm, thinly tomentose to glabrate;

blade oval or oblong to ovate or orbiculate, 5.5–14 × 3–14 cm, subsucculent to coriaceous, base cordate, sometimes clasping, margins entire, apex truncate to rounded, sometimes emarginate, mucronate, venation brochidodromous, surfaces thinly tomentose to glabrate, sometimes glaucous, margins minutely ciliate to glabrous, 24–80 laminar colleters.

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

blade needlelike to narrowly linear, 2.5–5.5 × 0.05–0.1 cm, chartaceous, base cuneate, margins entire, apex acute, mucronate, venation obscure, surfaces glabrous, margins ciliate, laminar colleters absent.

extra-axillary, sessile or pedunculate, 20–59-flowered;

peduncle 0–2.5 cm, puberulent with curved trichomes to pilosulous, with 1 caducous bract at the base of each pedicel.

extra-axillary at upper nodes, sometimes appearing terminal, pedunculate, 3–13-flowered;

peduncle 0.1–2 cm, puberulent with curved trichomes, with 1 caducous bract at the base of each pedicel.

15–35 mm, densely tomentose to glabrate.

6–16 mm, puberulent with curved trichomes.

erect to pendent;

calyx lobes lanceolate, 4–5 mm, apex acute, tomentose to glabrate;

corolla green, lobes reflexed, elliptic to oval, 7–9 mm, apex acute, glabrous abaxially, papillose at base adaxially;

gynostegial column 1–1.5 mm;

fused anthers green, cylindric, 3–3.5 mm, wings right-triangular, closed, apical appendages ovate;

corona segments cream, sometimes dorsally yellow, aging yellow, stipitate, conduplicate, dorsally rounded, 3–5.5 mm, equaling to slightly exceeding style apex, apex truncate, oblique, papillose, internal appendage falcate, exserted, sharply inflexed over style apex, papillose;

style apex shallowly depressed, green.

erect;

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

corolla pink to cream with a pink tinge, lobes reflexed with spreading tips, elliptic, 3.5–4.5 mm, apex acute, glabrous abaxially, minutely papillose at base adaxially;

gynostegial column 0.8–1 mm;

fused anthers green, columnar, 1–1.5 mm, wings narrowly right-triangular, closed, apical appendages deltoid;

corona segments cream, sometimes tinged or striped pink, stipitate, tubular, dorsally flattened, 2–2.5 mm, exceeded by to equaling style apex, apex obtuse, glabrous, internal appendage acicular, exserted, arching towards style apex, glabrous;

style apex shallowly depressed, cream.

ovate, 7–8 × 5–6 mm, winged, faces minutely rugulose to smooth;

coma 3–4 cm.

ovate, 5–6 × 3–5 mm, margin winged, faces smooth;

coma 2–3 cm.

erect on upcurved pedicels, ovoid, 6.5–9.5 × 2–3 cm, apex obtuse to apiculate, smooth, minutely pilosulous to thinly tomentulose.

erect on straight pedicels, narrowly fusiform, 2.5–9.5 × 0.5–1 cm, apex acuminate to attenuate, smooth, minutely puberulent with curved trichomes to glabrate.

= 22.