Flora of North America species comparison

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

petiole length 1/2 blade (not winged);

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

branched, not leafy; flowering diurnal.

0.3–1 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.

not tearing along sinuses, covering mature capsule.

ovoid, 0.7–1.5 cm.

0.5 mm.

trees or shrubs.

= 24.