Flora of North America species comparison

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

horizontal, shallow, internodes (0.6-)1-4 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 not variegate, cordate to almost reniform, 4-6.5 × 7-10.5 cm, apex broadly rounded-acute to rounded;

surfaces abaxially sparsely appressed-hirsute, adaxially glabrous or sparsely hirsute along veins, marginal hairs perpendicular to margin or curved toward apex.

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.

descending;

peduncle 2-3.

tube cylindric, externally reddish, at least in part, glabrous or sparsely hirsute, internally white, rarely with longitudinal red stripes, with white or purple hairs;

distal portion of sepal strongly reflexed at anthesis, 4-8 mm, apex acute to apiculate or short-acuminate, abaxially purple, glabrous or sparsely hirsute, adaxially red, puberulent with crisped pale or purple hairs;

pollen sacs 1-1.5 mm, sterile tip of connective on inner stamens purple or brown, 0.5-1 mm, shorter than pollen sacs.

= 26.