Flora of North America species comparison

deciduous;

petiole 0–3 mm, pilose-strigose;

blade elliptic, sometimes ovate-elliptic, rarely obovate, (50–)70–124(–210) x (24–)30–55(–90) mm, subcoriaceous, base cuneate, obtuse, truncate, or auriculate, margins flat, not revolute, veins 8–11, deeply sunken, apex long-acuminate, sometimes acute on short shoots, abaxial surfaces light green, initially yellowish strigose, adaxial green, shiny, not glaucous, strongly wrinkled or bulging between lateral veins (bullate), initially sparsely pilose;

fall leaves intense butter yellow and reddish purple.

deciduous;

petiole 4–7 mm, tomentose-villous;

blade elliptic to ovate, 33–45 × 20–32 mm, chartaceous, base rounded, margins flat, veins 5–7, superficial, apex acute or obtuse, abaxial surfaces densely silvery-pilose-villous, adaxial green to dark green, dull to slightly shiny, not glaucous, flat between lateral veins, rugose, sparsely pilose;

fall leaves lacking notable color.

on fertile shoots 60–120 mm with 4 leaves, 8–32-flowered, lax.

on fertile shoots 25–30 mm with 3 or 4 leaves, 5–13-flowered, pendent, lax.

2–4 mm, pilose-strigose.

3–8 mm, sometimes sparsely villous.

(5–)7–9 mm, closed;

hypanthium shallowly cupulate, shiny, sparsely pilose-strigose;

sepals: margins villous, apex acute, surfaces shiny, glabrous;

petals erect-incurved, pink, red, greenish pink, or maroon, margins pink;

stamens 20–23, filaments pink, white distally, anthers white;

styles (4 or)5.

erect, 6–7 mm, open;

hypanthium cupulate, dark reddish brown, glabrous;

sepals: margins erose, apex acute or obtuse, surfaces glabrous, often apically villous;

petals erect, greenish white with pink, red, base slightly darkened, margins white, glabrous;

stamens 20(–22), filaments white, anthers white;

styles 2–4.

bright to dark red, obovoid, broadly obovoid, or obconic, rarely globose or depressed-globose, 8–12.4 × 7–11.3 mm, shiny, not glaucous, sparsely pilose;

sepals flat, glabrous;

navel closed;

style remnants 3/4 from base.

purple-black, obovoid or globose, 7–9 × 7–9 mm, dull, glaucous with blue tinge, glabrous;

sepals suberect, glabrous or apically villous;

navel open;

style remnants 2/3 from base.

(4 or)5.

2–4.

= 48–52, 68 (Russia).