Flora of North America species comparison

bark smooth to vertically furrowed, shredding;

twigs multicellular stipitate-glandular-hairy and eglandular-hairy (hairs basally branched, crisped/matted), glabrate in age.

bark smooth to vertically furrowed, shredding;

twigs glabrous or, very rarely, sparsely, widely scattered, unicellular and multicellular eglandular-hairy.

persistent;

petiole multicellular-hairy (hairs ± branched), often glabrescent;

blade oblong to obovate or elliptic, (6–)9–20(–31) × (1.5–)2–5(–8) cm (length/width ratio 2.4–8), thick, coriaceous, margins entire, revolute to ± plane, glabrous or sparsely hairy (hairs branched), apex acuminate to sometimes acute, surfaces scattered stipitate-glandular-hairy and eglandular-hairy (hairs forming dense mat, basally branched, crisped, abaxially becoming sticky and matted, forming ± scaly or continuous, pale, shellaclike coating, smooth to slightly roughened, hairs ± deciduous adaxially).

deciduous;

petiole glabrous or multicellular eglandular-hairy;

blade ovate to obovate, 3–8(–10.5) × 1.3–3.5 cm, thin, chartaceous, margins entire, plane, ciliate, eglandular-hairy, apex acute to obtuse, often mucronate, abaxial surface glabrous, (sometimes glaucous), adaxial surface glabrous, (lustrous).

10–25-flowered;

bracts similar to bud scales.

3–7-flowered;

bracts similar to bud scales.

17–60 mm, multicellular stipitate-glandular-hairy.

6–21 mm, glabrous or stipitate-glandular-hairy, sometimes also unicellular-hairy.

opening after development of leaves (of flowering shoots), erect to horizontal, not or only slightly fragrant;

calyx lobes 2–6 mm, stipitate-glandular-hairy;

corolla white to pink, rarely deep pink to purple, with yellowish green spots on upper lobe, campanulate, 20–36 mm, scattered stipitate-glandular-hairy on outer surface, petals connate, lobes 10–23 mm, tube gradually expanding into lobes, 7–16 mm;

stamens 10, included, ± unequal, 14–26 mm; (ovary stipitate-glandular-hairy).

opening after leaves, erect to horizontal, very fragrant;

calyx lobes 0.8–6(–9) mm, surfaces and margins scattered, stipitate-glandular- and/or, sometimes, eglandular-hairy;

corolla white or, sometimes, light pink (contrasting with dark pink to red style and filaments), without blotch on upper lobe, funnelform, 30–55 mm, stipitate-glandular-hairy (hairs continuing in lines up lobes), otherwise glabrous or sparsely unicellular-hairy on outer surface, petals connate, lobes 10–24 mm, tube ± gradually expanded into lobes, 20–37 mm (equaling or much longer than lobes);

stamens 5, much exserted, ± unequal, 44–82 mm.

borne on erect pedicels, 8–20 × 4–6.5 mm, stipitate-glandular-hairy.

borne on erect pedicels, 8–17 × 4.5–8 mm, ± densely multicellular stipitate-glandular-hairy, sometimes also sparsely unicellular-hairy.

without distinct tails, flattened portion of testa well developed at each end;

testa expanded, dorsiventrally flattened, loose.

without distinct tails;

testa not dorsiventrally flattened, usually ± loose.

bud scales stipitate-glandular-hairy, eglandular-hairy (hairs ferruginous, crisped), and short unicellular-hairy abaxially, margins hairy (hairs branched, long-celled).

bud scales usually glabrous abaxially, margins unicellular-ciliate.

= 26.

= 26.