Flora of North America species comparison

branched from base (proximal branches longer), 5–20 dm, viscid-pubescent.

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

petiole length 1/3–1/6 blade;

blade elliptic to lanceolate, becoming very narrow near inflorescence, 10–25 cm, apex acuminate, surfaces viscid-pubescent, somewhat scabrous adaxially.

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.

few-branched, somewhat leafy; flowering crepuscular.

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

0.5–2 cm.

0.2–0.5 cm.

calyx strongly purple-veined, 1–2 cm, membranous, viscid-pubescent (hairs without swollen bases), lobes long-triangular, unequal, longest equaling tube;

corolla straight, 2.5–10 cm (excluding limb), viscid-puberulent externally, tube white or white tinged with greenish purple, sometimes striped, 0.8–4 cm × 2–3 mm, widening to throat 1–4 × 5 mm, glabrous or minutely puberulent internally, limb spreading, white, circular, 2–4 cm diam., lobes shallow, deltate or emarginate;

stamens inserted near base of throat, included;

filaments unequal, in 2 equal or unequal pairs, 4 cm, 1 filament shorter than either pair, pubescent proximally;

style straight, just surpassing longest stamen pair.

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.

tearing along membranous sinuses, covering ca. 1/2 of mature capsule.

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

broadly ovoid, 1–1.2 cm.

broadly ovoid (acute), 0.8–1.1 cm.

0.9–1 mm.

0.5 mm.

leaves: petiole length equaling blade;

blade ovate or orbiculate, 6–12 cm, surfaces viscid-pubescent, somewhat scabrous adaxially.

= 24.

= 24.