Flora of North America species comparison

bark smooth to vertically furrowed, shredding;

twigs scattered, multicellular eglandular-hairy (hairs unbranched), otherwise glabrous or moderately unicellular-hairy.

bark smooth to vertically furrowed, shredding;

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

deciduous;

petiole unicellular- and stipitate-glandular-hairy;

blade ovate to obovate, 4–7.7(–9.4) × 1.2–2.5(–3.3) cm, thin, membranous, margins entire, plane, ciliate, eglandular-hairy, apex acute to obtuse, often mucronate, abaxial surface glabrous or unicellular-hairy, adaxial surface usually scattered eglandular-hairy, usually also unicellular-hairy.

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.

6–7-flowered;

bracts similar to bud scales.

6–15-flowered;

bracts similar to bud scales.

4–12 mm, eglandular- and/or stipitate-glandular-hairy, otherwise glabrous or moderately unicellular-hairy.

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

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

calyx lobes 0.1–3 mm, scattered eglandular-hairy and/or stipitate-glandular-hairy, otherwise sparsely to moderately unicellular-hairy, margins eglandular-hairy;

corolla white, sometimes pink-tinged, with contrasting yellow blotch on upper lobe, funnelform, 25–42 mm, scattered stipitate-glandular-hairy (hairs often continuing in lines up lobes), otherwise sparsely to moderately unicellular-hairy on outer surface, petals connate, lobes 9–21 mm, tube usually ± gradually expanded into lobes, 15–31 mm (longer than lobes);

stamens 5, much exserted, ± unequal, 37–69 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, 14–22 × 3–4 mm, sparsely to moderately multicellular eglandular-hairy, otherwise moderately to densely unicellular-hairy.

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

without distinct tails;

testa expanded, dorsiventrally flattened, ± loose.

without distinct tails;

testa rather close, but ± loose.

bud scales glabrous or glabrate abaxially, margins unicellular-ciliate.

bud scales usually glabrous abaxially, margins unicellular-ciliate.

= 26.

= 26.