Flora of North America species comparison

horizontal, ± deeply buried, internodes 0.5-2.1 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 unlobed, margins entire.

terminal or axillary, racemes or solitary flowers, rarely fan-shaped cymes.

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.

bisexual;

calyx enlarged, petaloid, usually tubular, [1-,] 3-, [6-, rarely 5-]merous, lobes valvate;

corolla usually reduced to scales or absent;

stamens 5, 6, or 12 [multiples of 3 or 5], free or adnate to styles and stigmas, forming gynostemium;

anthers extrorse;

pistil 1, 4-6-carpellate;

ovary inferior, partly inferior, or superior;

placentation axile (and ovaries 4-6-locular) or parietal;

ovules many per locule, anatropous.

capsules [follicles], regularly to irregularly loculicidal, rarely indehiscent [septicidal].

often flattened;

endosperm copious.

with broad medullary rays.