Flora of North America species comparison

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

usually erect, sometimes branching from base.

alternate, densely clustered in rosette-forming species, sessile or petiolate;

petiole often winged;

blade simple, margins entire or irregularly and obscurely crenate and sometimes undulate.

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.

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

terminal or apparently axillary, cymose, usually forming false racemes, or glomerulate.

0.2–0.5 cm.

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.

bisexual, 5-merous (fasciated with increased parts only in cultivars), radially symmetric or somewhat bilaterally symmetric, especially in androecium;

calyx tubular or narrowly campanulate, 5-lobed, lobes persistent, usually deltate or triangular, equal or unequal, usually slightly accrescent and mostly enclosing capsule;

corolla white to cream, variously marked or tinged with pink or purple, or yellow-green, radial or more commonly at least somewhat bilateral, tubular, funnelform, or salverform, limb deeply 5-lobed to ± entire, lobes, if present, rounded to deltate, sometimes emarginate;

stamens 5, inserted variously from near base of corolla tube to near apex, sometimes unequal (2 + 2 + 1), on equal filaments or filaments of unequal length with one inserted at a different level and usually shorter than the other 4;

anthers dorsifixed (or appearing basifixed), ellipsoid to globose, dehiscing by longitudinal slits;

ovary 2-carpellate (irregularly more in some cultivars);

style filiform, straight or curved;

stigma capitate or slightly 2-lobed.

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

capsules, usually ovoid, sometimes narrowly so, 2–4-valved (occasionally many-valved in cultivars), dehiscent apically with long septicidal cleft and shorter loculicidal cleft.

broadly ovoid (acute), 0.8–1.1 cm.

0.5 mm.

angular to oblong (minute), occasionally somewhat reniform.

= (9, 10), 12, (16, 18, 19), 24.

= 24.