Flora of North America species comparison

1–3, erect to ascending, unbranched, very stout, 100–150 cm, densely hirsute, not glaucous, rhizomes absent(?).

opposite, petiolate, with 1 stipular colleter on each side of petiole;

petiole 1–5 mm, hirsute;

blade oval or oblong to ovate, 7–22 × 3–14 cm, subsucculent, base truncate to subcordate, margins entire, apex obtuse to truncate or emarginate, mucronate, venation brochidodromous, secondary veins nearly orthogonal, surfaces hirsute, margins ciliate, 8–16 laminar colleters.

terminal, paired, and extra-axillary, pedunculate, 21–53-flowered;

peduncle 6–13 cm, densely hirsute, with 1 caducous bract at the base of each pedicel.

13–22 mm, densely hirsute.

erect to pendent;

calyx lobes lanceolate, 3.5–6 mm, apex acute, hirsute;

corolla cream to greenish cream or ochroleucous, sometimes tinged pink, lobes reflexed with spreading tips, elliptic, 9–11 mm, apex acute, glabrous;

gynostegial column 0.5–1 mm;

fused anthers greenish brown, cylindric, 2.5–3 mm, wings right-triangular, closed, apical appendages oval;

corona segments cream to ochroleucous, sometimes tinged pink, shiny, subsessile, conduplicate, 6–8 mm, equaling or exceeding style apex, apex truncate, spreading and tapering, glabrous, internal appendage laterally compressed, erect, barely exserted, glabrous;

style apex shallowly depressed, green or pink.

ovate, 6–7 × 4–5 mm, margin winged, faces minutely rugulose;

coma 4–4.5 cm.

erect on upcurved pedicels, lance-ovoid, 9.5–13.5 × 2–3 cm, apex attenuate, smooth, densely hirsute.