Flora of North America species comparison

persisting;

petiole present or absent;

blade linear-lanceolate to linear, margins very deeply lobed, lobes slender.

petioles present or absent;

blade oblanceolate, to 11 cm;

margins shallowly lobed, lobes rounded.

petiole absent;

blade ovate-lanceolate to linear, to 15 cm, margins deeply to shallowly lobed or entire.

petioles absent;

blade ovate to lanceolate, to 11 cm, base often cordate-clasping, margins deeply to shallowly lobed, lobes acute.

green, ovate to lanceolate, 4.8–12.4 × 0.9–3.5 mm, width 1/8–1/2 length, not concealing capsule, margins usually entire, rarely 2-lobed.

green, inconspicuous, not concealing pedicel, ovary, or capsule.

sepals (7–)9–16 mm;

petals yellow, 12–25 mm, apex acute or mucronate;

stamens 20+, 3–10 mm, filaments monomorphic, filiform, unlobed;

styles 7–15 mm.

petals yellow to orange, obovate, 12–31 mm, apex mucronate;

stamens 4–12 mm, less than 1/2 petal length, all fertile, none petaloid (flowers appearing to have 5 petals);

filaments ±monomorphic, linear, most or all distally 2-lobed, lobes to 0.3 mm;

anther stalk longer than filament lobes;

style 6–15 mm.

clavate, 19–40 × 2–3.5 mm, axillary curved to 270° at maturity, usually inconspicuously longitudinally ribbed.

cylindric to cup-shaped, 13–25 × 5–8 mm, erect.

30–60, in 2+ rows distal to mid fruit, tan, usually dark-mottled, usually irregularly polygonal, occasionally triangular prisms proximal to mid fruit, surface colliculate under 10x magnification; recurved flap over hilum usually present;

seed coat cell outer periclinal wall domed, domes on seed edges less than 1/2 as tall as wide at maturity.

widest at middle, not grooved;

seed coat anticlinal cell walls deeply wavy.

= 18.