Flora of North America species comparison

horizontal, ± deeply buried, internodes 0.5-2.1 cm.

erect or ascending, deeply buried, internodes 0.2-1.5 cm.

blade not variegate, broadly reniform to cordate-reniform, 3-8 × 4-11 cm, apex obtuse to rounded (broadly acute);

surfaces abaxially sparsely hirsute, adaxially sparsely hirsute only along veins, marginal hairs mostly curved toward apex.

blade almost always variegate with white or silver along veins, cordate to cordate-reniform, 4-14 × 3-12 cm, apex acute to broadly acuminate, rarely obtuse;

surfaces abaxially sparsely hirsute, adaxially glabrous or sparsely hirsute along veins, marginal hairs ± perpendicular to margin.

erect or ascending;

peduncle 0.8- calyx tube subglobose to cylindric-urceolate or urceolate, externally light green, sparsely to moderately hirsute, internally white or light green, bordered and occasionally striped with purple, with purple hairs;

distal portion of sepal spreading perpendicularly from base at anthesis, bent abruptly upward at midpoint, 8-20 mm, apex filiform-acuminate, abaxially white to pale green, sparsely villous to villous, adaxially white or light green, at least distally, bordered with purple and occasionally with purple band across base, puberulent with crisped purple-tipped hairs;

pollen sacs 1-2 mm, sterile tip of connective on inner stamens dark red, 0.25-1 mm, shorter than pollen sacs.

erect or nearly so;

peduncle 1.2-1.

tube subglobose, externally mottled red, sparsely to moderately hirsute, internally dark red, with purple hairs;

distal portion of sepal erect or spreading at anthesis, 17-52 mm, apex filiform-attenuate, abaxially pale green, hirsute, adaxially tan or brownish green, rarely red proximally, puberulent with crisped purple hairs;

pollen sacs 0.8-2.4 mm, sterile tip of connective on inner stamens dark red-brown, 1.2-3.8 mm, longer than pollen sacs.