Flora of North America species comparison

light brown with shallow ridges and large plates.

gray, deeply fissured with broad, flattened ridges.

often with opposite corky wings;

twigs reddish brown, pubescent.

short-spreading, young branches pubescent, old-growth with 3-5 prominent, irregular, corky wings;

twigs reddish, pubescent.

brown, apex acute, pubescent;

scales dark brown, shiny, glabrous.

brown, ovoid, acute, pubescent;

scales brown, pilose on outer surface, ciliate on margins.

blade ovate to elliptic, 2.5-5 × 1.3-2 cm, base oblique or rounded to cuneate, margins crenate to doubly serrate, apex obtuse;

surfaces abaxially softly pubescent, adaxially harshly pubescent.

blade obovate to oblong-oval, (2.5-)9-11(-16) × 2.5-5 cm, base oblique, margins doubly serrate, apex short-acuminate;

surfaces abaxially white-pubescent, pubescence not tufted in axils of veins, adaxially dark green, usually glabrous, sometimes scabrous.

fascicles, 2-5-flowered, 0.5 cm;

pedicel 0.75-1 cm.

racemose cymes, long-pendulous, (7-)10(-13)-flowered, to 5 cm;

pedicel 0.5-1 cm.

calyx deeply lobed, more than 1/2 its length, lobes 6-9, hairy;

stamens 5-6, anthers reddish purple;

stigmas white, pubescent, exserted and spreading.

calyx deeply lobed, divided nearly to middle, lobes 7-8;

stamens 5-8;

anthers dark purple;

stigmas greenish, pubescent.

somewhat thickened, not inflated.

inflated, not thickened.

hard.

hard.

green to tan, elliptic to oval, ca. 0.75-1 cm, pubescent, margins ciliate, cilia ca. 0.5 mm.

elliptic to oval, 1.5-2.2 cm, narrowly winged, pubescent, margins short-ciliate, apex shallowly notched.

= 28.

= 28.