Flora of North America species comparison

single or with multiple robust branches, 3–20 dm, moist, patent, viscid-pubescent.

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

sessile or short-petiolate, congested toward inflorescence;

blade ovate to lanceolate, 1–4 cm, gradually decreasing in size and narrower distally, apex acute to acuminate, surfaces coarsely viscid-pubescent.

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 few-branched, leafy to bracteate; flowering crepuscular.

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

0.4–1 cm (longer in fruit).

0.5–1.5 cm (nodding, flowers pendent).

calyx green, elliptic, 10-ridged (or more in fasciated plants), 0.9–3.5 cm, densely viscid-pubescent, (trichomes occasionally with swollen bases), lobes linear, ± equal, length equaling or sometimes exceeding tube, sinus membranes long, transparent;

corolla straight, 2–5 cm (excluding limb), minutely viscid-pubescent externally, tube and throat not well differentiated, white or ivory, or tinged purple externally and oily-glossy, broadly trumpet-shaped, tubular portion from 2 mm diam. at base to 7 mm diam. at mouth (much wider in fasciated varieties), glabrous or minutely puberulent internally, limb spreading, cream to white flushed with grayish purple (externally), stellate to pentagonal, 2–5 cm diam., lobes broadly triangular, acute;

stamens unequal, 4 inserted just below mouth, exserted, 1 inserted ca. 1 cm deeper in throat, included;

filaments ± equal, 0.3–1 cm, glabrous;

style straight, just exceeding stamens.

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, completely enclosing capsule.

not tearing at sinuses, almost completely covering capsule.

narrowly ovoid, 1–2.5 cm.

ovoid, 1.5–1.8 cm.

0.9 mm.

0.5 mm.

leaves: petiole length to 1/2 blade;

blade elliptic to narrowly ovate, 1–1.5 cm, surfaces usually viscid-pubescent abaxially, glabrous adaxially.

leaves sessile;

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

= 48.

= 24.