Flora of North America species comparison

bark smooth to vertically furrowed, shredding;

twigs with basally branched, crisped/matted, eglandular hairs, very quickly glabrate.

bark smooth to vertically furrowed, shredding;

twigs scattered, multicellular eglandular-hairy (hairs unbranched) or such hairs ± absent, otherwise glabrous or sparsely unicellular-hairy.

persistent;

petiole glabrous;

blade elliptic to slightly ovate or obovate, (6–)8.5–14(–20) × 2.5–5.5(–7.5) cm, thick, coriaceous, margins entire, plane to revolute, glabrous, apex acute to obtuse or slightly acuminate, surfaces scattered eglandular-hairy (hairs branched basally, crisped, very quickly deciduous), abaxial surface ± smooth.

deciduous;

petiole multicellular eglandular-hairy and unicellular-hairy;

blade ovate to obovate, 3–9(–12.5) × 1.4–3.8(–5) cm, thin, membranous, margins entire, plane, ciliate, eglandular-hairy, often strikingly so, apex acute to obtuse, often mucronate, abaxial surface often glabrous or, sometimes, sparsely unicellular-hairy, sometimes sparsely eglandular-hairy, adaxial surface sometimes scattered eglandular-hairy, otherwise glabrous or, sometimes, sparsely unicellular-hairy.

10–20-flowered;

bracts similar to bud scales.

6–15-flowered;

bracts similar to bud scales.

30–60 mm, glabrous.

4–19 mm, eglandular-hairy, otherwise glabrous or sparsely unicellular-hairy.

opening after development of leaves (of flowering shoots), erect to horizontal, fragrant;

calyx lobes 1–1.5 mm, glabrous, except margins eglandular- and stipitate-glandular-hairy;

corolla white to pink or rose-purple, with yellowish green spots on upper lobe, broadly campanulate, 24–48 mm, outer surface glabrous, petals connate, lobes 14–30 mm, tube gradually expanding into lobes, 10–23 mm;

stamens 10, included, ± unequal, 16–37 mm.

opening before or with leaves, erect to horizontal, slightly fragrant;

calyx lobes 0.5–2.5(–4) mm, surfaces and margins scattered, eglandular- and/or, rarely, stipitate-glandular-hairy, otherwise glabrous or moderately unicellular-hairy;

corolla deep pink to white with pink tube, without blotch on upper lobe, funnelform, 23–45 mm, scattered, multicellular eglandular-hairy and/or, less commonly, multicellular stipitate-glandular-hairy (hairs not forming distinct lines), otherwise sparsely to moderately unicellular-hairy on outer surface, petals connate, lobes 9–25 mm, tube usually gradually expanded into lobes, 12–27 mm (equaling or longer than lobes);

stamens 5, much exserted, ± unequal, 32–68 mm.

borne on erect pedicels, 13–25 × 4–7 mm, eglandular-hairy (hairs ferruginous, branched or unbranched) and, often, stipitate-glandular-hairy.

borne on erect pedicels, 10–30 × 3–6.5 mm, eglandular-hairy, otherwise glabrous or sparsely unicellular-hairy.

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

testa expanded, dorsiventrally flattened, loose.

without distinct tails;

testa rather close, but ± loose.

bud scales multicellular eglandular-hairy (hairs branched basally), and unicellular-hairy (hairs short to elongate) abaxially, margins eglandular-hairy (hairs branched).

bud scales usually glabrous abaxially, margins unicellular-ciliate.

= 26.

= 26.