Flora of North America species comparison

bark smooth to vertically furrowed, shredding;

twigs with ferrugineous, multicellular, broad-rimmed, glandular-peltate scales.

bark ± smooth, not shredding;

twigs scattered, multicellular eglandular-hairy (hairs unbranched) and/or stipitate-glandular-hairy, otherwise glabrous or, sometimes, sparsely unicellular-hairy.

persistent;

petiole with ferruginous, broad-rimmed, glandular-peltate scales and unicellular-hairy;

blade narrowly elliptic to elliptic or oval, sometimes obovate, (1–)5–8(–13) × (1–)2–3.5(–5.5) cm, thick, coriaceous, margins entire, plane to conspicuously revolute, with scattered, glandular-peltate scales, apex acute or acuminate or obtuse to rounded, surfaces with scattered, ferruginous, broad-rimmed, glandular-peltate scales abaxially, (scales ± deciduous adaxially).

deciduous;

petiole multicellular eglandular- and/or stipitate-glandular-hairy, sometimes also unicellular-hairy;

blade ovate to obovate, 2–5.5(–6.5) × 0.8–2(–3) cm, thin, membranous to chartaceous, margins entire, plane, ciliate, eglandular-hairy, apex acute to obtuse, often mucronate, abaxial surface glabrous or, rarely, sparsely scattered eglandular-hairy, sometimes sparsely (rarely densely) unicellular-hairy, adaxial surface (lustrous to dull), glabrous or sparsely scattered stipitate-glandular-hairy, sometimes also sparsely unicellular-hairy.

5–10-flowered;

bracts similar to bud scales.

4–13-flowered;

bracts similar to bud scales.

5–15 mm, with ferruginous scales.

4–15(–20) mm, eglandular- and/or stipitate-glandular-hairy, otherwise glabrous or sparsely (rarely moderately) unicellular-hairy.

opening before or after development of leaves, erect to horizontal, fragrant;

calyx lobes 0.5–2 mm, with ferruginous scales;

corolla dark to very pale pink or white, upper lobe usually with greenish spots, campanulate to funnelform, 15–37 mm, with scattered, ferruginous, peltate scales on outer surface, petals connate (for 3/4+ their lengths), lobes 8–19 mm, tube gradually expanding into lobes, 8–22 mm;

stamens 10, included to slightly exserted, ± unequal, 13–26 mm.

opening before or with leaves, erect to horizontal, usually very fragrant and/or nearly mephitic-scented;

calyx lobes 0.7–5.5(–10) mm, marginal and scattered stipitate-glandular- or, less commonly, eglandular-hairy, sometimes also unicellular-hairy;

corolla white, usually flushed pink or rose (especially on tube), without blotch on upper lobe, funnelform, 23–58 mm, scattered, usually conspicuous, multicellular stipitate-glandular-hairy (hairs forming prominent band along middle of each lobe), otherwise glabrous or, sometimes, sparsely unicellular-hairy on outer surface, petals connate, lobes 8–24 mm, tube rather gradually expanded into lobes, 16–35 mm (equaling or longer than lobes);

stamens 5, much exserted, ± unequal, 32–63 mm.

borne on erect pedicels, 6–14 × 2.9–5 mm, with ferruginous, peltate scales.

borne on erect pedicels, 10–24 × 4–8 mm, usually densely stipitate-glandular-hairy, otherwise glabrous or densely unicellular-hairy.

with short, blunt/truncate tails at each end;

testa closely appressed.

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

testa expanded, dorsiventrally flattened, ± loose.

bud scales ferruginous-lepidote, sometimes also unicellular-hairy abaxially, margins unicellular-ciliate.

bud scales glabrous or densely unicellular-hairy abaxially, margins usually unicellular-ciliate.

= 26.

= 26.