Flora of North America species comparison

short, producing 4-8 or more leaves per year.

absent.

blade 2-foliolate, often with minute apiculation between leaflets;

leaflets 1.2-4 × 0.6-2.5 cm at anthesis, maturing to 6-13 × 3-7 cm, lobes rounded to acute.

blade reniform-orbiculate in overall outline, 1.5-18 cm, leaflet margins entire to shallowly lobed;

venation palmate.

9-33 cm, frequently taller than petioles at anthesis.

terminal, solitary flowers borne on scapes.

sepals elliptic to obovate, 7-15 × 4-6 mm;

petals white, elliptic to obovate, 11-22 × 9-12 mm;

stamens 6-12 mm;

filaments 2-3 mm;

anthers 4-9 × 1-1.5 mm;

ovaries 6-11 × 3-7 mm.

4-merous, 15-30 mm;

bracteoles absent;

sepals caducous, (3-)4(-5), petaloid;

petals 8, white [lavender];

stamens 8;

anthers dehiscing by 2 apically hinged flaps;

pollen exine striate;

ovaries obovoid;

placentation marginal;

style central.

18-38 × 8-17 mm, leathery, opening transversely, apical quarter resembling lid, becoming reflexed.

capsulelike, brownish, obovoid, with transverse or oblique dehiscence, top forming reflexed lid.

oblong, 4-7 × 2 mm;

aril laciniate, attached at adaxial side of hilum.

10-25, red;

aril white, not enclosing seed.

= 6.

= 12.