Flora of North America species comparison

prostrate to erect;

bark ± smooth to vertically furrowed, shredding;

twigs with straw-colored to ferruginous, multicellular, broad-rimmed, peltate scales and unicellular-hairy.

bark smooth to vertically furrowed, shredding;

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

persistent;

petiole with broad-rimmed, glandular-peltate scales;

blade oblong-elliptic to elliptic, ovate, or obovate, 0.4–2(–2.5) × 0.2–0.7(–0.9) cm, coriaceous, margins entire, plane to revolute, with broad-rimmed scales, apex obtuse to rounded or mucronate, surfaces with conspicuous, straw-colored or golden to ferruginous, broad-rimmed, glandular-peltate scales and unicellular-hairy abaxially.

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).

fasciculate racemes, 3–6-flowered;

bracts similar to bud scales.

3–7-flowered;

bracts similar to bud scales.

2.5–14 mm, with ferruginous scales and often unicellular-hairy.

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

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

calyx lobes 0.5–2 mm, with ferruginous scales and unicellular-hairy, margins ciliate, unicellular and multicellular eglandular-hairy;

corolla rose to purple, sometimes white, without blotch, broadly funnelform, (6.5–)7.5–14(–15) mm, glabrous on outer surface, petals connate (for 3/4+ their lengths), lobes 4.5–8.5 mm, tube gradually expanding into lobes, 1.5–6.5 mm;

stamens 5–10, slightly exserted, ± unequal, 7–13 mm;

filaments glabrous or proximally unicellular-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, 4–7 × 2–3 mm, with ferruginous, peltate scales and unicellular-hairy.

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

without distinct tails;

testa closely appressed.

without distinct tails;

testa not dorsiventrally flattened, usually ± loose.

bud scales ferruginous-lepidote, sometimes also unicellular-hairy abaxially, margins ± ciliate, unicellular and multicellular, elongate eglandular-hairy.

bud scales usually glabrous abaxially, margins unicellular-ciliate.

= 26, 52.

= 26.