Flora of North America species comparison

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

horizontal, shallow, internodes 1.0-3.5 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 not variegate, cordate-reniform to reniform, 4-8(-20) × 8-14(-21.5) cm, apex rounded or obtuse;

surfaces abaxially appressed-hirsute, usually sparsely so, adaxially appressed-hirsute, at least along main 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.

erect or ascending;

peduncle 1.5- calyx tube cylindric, externally tan or purplish, hirsute (often densely), internally white or pale green, occasionally mottled with purple, with white or purple hairs;

distal portion of sepal spreading or reflexed at anthesis, 6-24 mm, apex apiculate to acuminate or filiform-attenuate, abaxially green or purple, hirsute, adaxially purple, puberulent with crisped purple or pale hairs;

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

= 26.