Flora of North America species comparison

usually branched near base, occasionally with distinct trunk (branches drooping), 10–60(–100) dm, glabrous, somewhat glaucous.

single or multiple, stout, branches erect, 4–30 dm, viscid-pubescent.

petiole length 1/2 blade (not winged);

blade ovate to lanceolate, 5–25 cm, base acute or cordate, apex rounded, (rubbery), surfaces glabrous, glaucous.

sessile;

proximal blades elliptic, distal elliptic to elliptic-ovate, decreasing in size distally, 20–50 cm, base auriculate, apex acute to acuminate, surfaces viscid-pubescent.

branched, not leafy; flowering diurnal.

branched panicles with congested branches, appearing moplike, leafy; flowering crepuscular.

0.3–1 cm.

0.5–1.5 cm (nodding, flowers pendent).

calyx green, (evenly cylindric), 1–1.5 cm, without membranous sinuses, glabrous or minutely pubescent, lobes sharply triangular, equal, much shorter than tube;

corolla straight, 2.5–4.5 cm (excluding limb), glabrous or finely pubescent externally, tube bright yellow to greenish yellow, (cylindric to clavate, slightly constricted apically), 0.5–0.8 cm × 3 mm, widening slightly to throat 1.5–4 cm × 6–8 mm, glabrous within, limb assurgent, greenish yellow or bright green (usually distinct color from tube in young flowers), turning yellow and same color as tube with age, circular or pentagonal, 0.6–0.8 cm diam., lobes rounded, broadly triangular, equal;

stamens inserted at base of throat, extending to corolla mouth;

filaments subequal 2.5–4.5 cm, (geniculate at base), glabrous;

style straight, exceeding stamens and exserted from corolla mouth.

calyx green, oblong or subglobose (somewhat twisted), 1–1.8 cm, viscid-pubescent, lobes erect, deltate to triangular, equal or nearly so, much shorter than tube;

corolla white, straight or very slightly curved, 6–9 cm (excluding limb), minutely viscid-pubescent without, tube white, cylindric, straight or slightly curved, 2 cm × 1–2 mm, throat 40–70 mm, glabrous or minutely puberulent internally, ventricose and inflated in middle to distal 1/3 (often somewhat asymmetrically), narrowing toward apex with constriction at mouth, 5 mm diam., limb spreading, tips somewhat reflexed, white, stellate, 1.5–2 cm diam., lobes white, broadly triangular, acute apically;

stamens inserted subequally at base of throat, included;

filaments unequal, 4 longer, 4–7 cm, just reaching corolla mouth, 1 slightly shorter, 4–6 cm, pubescent at insertion point;

style straight, just exceeding the 4 longer stamens, slightly exserted.

not tearing along sinuses, covering mature capsule.

not tearing at sinuses, almost completely covering capsule.

ovoid, 0.7–1.5 cm.

ovoid, 1.5–1.8 cm.

0.5 mm.

0.5 mm.

trees or shrubs.

leaves sessile;

blade elliptic, to 50 cm, base decurrent and often auriculate or clasping, surfaces viscid-pubescent.

= 24.

= 24.