Flora of North America species comparison

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

branched from base, (slender, brittle), 5–10 dm, viscid-tomentose.

petiole length 1/2 blade (not winged);

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

petiole short and winged or leaves sessile;

proximal blades oblanceolate to narrowly elliptic, distal blades panduriform to trigonate, 5–20 cm, smaller very near inflorescence, base somewhat clasping, apex acute or acuminate, surfaces densely viscid-pubescent.

branched, not leafy; flowering diurnal.

secund false racemes, occasionally few-branched, somewhat leafy; flowering diurnal.

0.3–1 cm.

0.2–0.5 cm.

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, cup-shaped, 10-ribbed, 0.8–2 cm, with minute membranous sinuses, pubescent and somewhat rough, lobes triangular to long-triangular, ± unequal, as long or longer than tube, tips slightly recurved;

corolla straight, 1.2–3.5 cm (excluding limb), viscid-pubescent externally, tube gray-green, cream, or ± yellowish cream, 0.3–0.6 cm × 2–4 mm, widening to throat 6–12 × 5 mm, glabrous or minutely puberulent within, limb slightly reflexed to spreading, cream or whitish green, pentagonal, 0.6–8 cm diam., lobes broadly triangular and rounded apically, equal;

stamens inserted at base of throat, included;

filaments unequal, 4 straight, 1.2–3.4 cm, sometimes kneed, extending to corolla mouth, 1 shorter, 1–2 cm, not kneed, curved away from corolla, all slightly pubescent just above insertion point;

style straight, just exceeding longest stamens.

not tearing along sinuses, covering mature capsule.

not tearing at sinuses, covering lower 2/3 of capsule.

ovoid, 0.7–1.5 cm.

broadly ovoid (acute), 0.8–1.1 cm.

0.5 mm.

0.5 mm.

trees or shrubs.

= 24.

= 24.