Flora of North America species comparison

single or with few weak lateral branches, 5–20 dm, viscid-pubescent or glabrate with few hairs with swollen bases.

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

petiole length to 1/2 blade, distal leaves sessile;

blade lanceolate to linear, progressively narrower distally, 2–8(–10.5) cm, apex acute to acuminate, surfaces viscid-pubescent or glabrate.

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.

unbranched or with few short lateral branches, somewhat leafy; flowering crepuscular (early morning).

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

0.2–0.4 cm.

0.5–1.5 cm (nodding, flowers pendent).

calyx uniformly green or with weakly developed veins, 0.6–1 cm, densely viscid-pubescent (hairs with swollen bases), lobes narrowly triangular, shorter than tube, unequal;

corolla straight, 2–3.5 cm (excluding limb), viscid-puberulent externally, tube creamy white or tinged with purple-green or gray-green, 0.5–0.7 cm × 1.5–2 mm, widening to throat 2–3 × 5 mm (asymmetrically dilated distally), glabrous or minutely puberulent within, limb spreading or slightly reflexed, white or cream, pentagonal to ± circular and often asymmetrically spreading, 0.4–0.8 cm diam., lobes shallow and rounded or obtuse, broadly triangular (proximal lobes reflexed);

stamens inserted near base of throat, included;

filaments unequal, 4 of 3 cm (2 of these slightly longer), 1 shorter, 1.5–2 cm, glabrous or minutely pubescent proximally;

style straight, just shorter than longest stamen pair.

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 at sinuses, covering to 1/2 of mature capsule.

not tearing at sinuses, almost completely covering capsule.

ovoid, 0.8–1.2 cm.

ovoid, 1.5–1.8 cm.

0.8 mm.

0.5 mm.

leaves: petiole length shorter than or almost equaling blade (2–3 cm);

blade elliptic or oblong-elliptic, 5–10 cm, surfaces viscid-pubescent.

leaves sessile;

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

= 24.

= 24.