Flora of North America species comparison

pubescent or glabrescent.

loosely strigose when young, soon glabrate.

unifoliolate;

stipules broadly lanceolate, 1–2 mm;

petiole 3–4 cm, glabrous;

blade broadly ovate to suborbiculate, 60–160 × 60–160 mm, 2-lobate 1/4–1/3 length, base cordate, 11–13-veined, apex of each lobe rounded, surfaces sparsely puberulous abaxially, glaucous, glabrous adaxially.

uni- or bifoliolate;

stipules broadly lanceolate, 1 mm;

petiole 0.5–1(–1.5) cm, loosely strigose;

blade broadly ovate to suborbiculate, (10–)15–25(–30) × (15–)20–25(–30) mm, 2-lobate 3/4+ length or bifoliolate, base cordate or, rarely, truncate, (5–)11-veined, apex of each lobe rounded, surfaces strigose to glabrate abaxially, glabrous adaxially.

3–8-flowered; mostly subterminal;

bract and bracteoles triangular, minute.

2–6(–10)-flowered;

terminal or subterminal;

bract lanceolate, 1 mm;

bracteoles similar to bract, smaller.

0.5 cm.

0.5–1 cm.

buds fusiform, 3–4 mm;

hypanthium tubular, 15 mm;

petals white or purple, obovate, subequal, 40–55 mm;

fertile stamens 5;

filaments shortly connate basally with staminodes, 20–40 mm;

anthers 7 mm;

staminodes 1–5, 2–3 mm;

gynoecium arcuate, nearly equaling stamens;

ovary pubescent (mainly on sutures), style and gynophore glabrous;

stigma capitate.

buds sometimes purplish tinged, narrowly lanceolate, 10–20 mm;

hypanthium cyathiform, 1–2 mm;

petals white or pale pink, elliptic-lanceolate to ovate, subequal, 15–25 mm;

fertile stamen 1, subequaling petals;

filament shortly connate basally with staminodes, 15–25 mm;

anther 5–7 mm;

staminodes 9, 5–7 mm;

gynoecium slightly arcuate, subequaling stamens;

ovary and gynophore pilose, style glabrate;

stigma capitate.

stipe 15 mm;

linear, 200–300 × 20–25 mm.

gynophore 5 mm;

linear, 50–80 × 10–20 mm.

10–25, brown, subglobose, 1–15 × 15 mm;

funicular aril lobes subequal, 1 mm.

5–10, dark brown, oblong, 7–10 × 6–8 mm;

funicular aril lobes unequal, 1.5 mm and 0.5 mm.