Flora of North America species comparison

bark smooth to vertically furrowed, shredding;

twigs conspicuously multicellular stipitate-glandular-hairy, otherwise ± moderately to densely unicellular-hairy.

bark smooth to vertically furrowed, shredding;

twigs glabrous.

deciduous;

petiole multicellular stipitate-glandular-hairy and unicellular-hairy;

blade ovate to obovate, 3–11 × 1.5–4.5 cm, thin, membranous, margins entire, plane, ciliate, eglandular- and stipitate-glandular-hairy, apex acute to obtuse, often mucronate, abaxial surface ± moderately unicellular-hairy, adaxial surface sparsely scattered stipitate-glandular-hairy, otherwise ± moderately unicellular-hairy, rarely glabrescent.

deciduous;

petiole usually multicellular eglandular-hairy and unicellular-hairy;

blade ovate to obovate, 3–11(–15.2) × 1–4(–5) cm, thin, membranous to chartaceous, margins entire, plane, ciliate, eglandular-hairy, apex acute to obtuse, often mucronate, abaxial surface glabrous, adaxial surface glabrous or, rarely, sparsely scattered eglandular-hairy.

9–24-flowered;

bracts similar to bud scales.

4–7-flowered;

bracts similar to bud scales.

5–17 mm, stipitate-glandular-hairy, otherwise ± densely unicellular-hairy.

5–12 mm, eglandular-hairy.

opening before or with leaves, erect to horizontal, slightly or not fragrant;

calyx lobes 0.5–2.5 mm, scattered stipitate-glandular-hairy, otherwise unicellular-hairy, margins long stipitate-glandular-hairy;

corolla yellow to orange, with usually red or orange-red tube, with indistinct, darker yellow, orange, or red blotch on upper lobe, funnelform, 25–45 mm, scattered stipitate-glandular-hairy, otherwise ± moderately unicellular-hairy on outer surface, petals connate, lobes 9–20 mm, tube ± gradually expanded into lobes, 15–25 mm (longer than lobes);

stamens 5, much exserted, ± unequal, 52–77 mm.

opening after development of leaves, erect to horizontal, not fragrant;

calyx lobes 1–3(–4) mm, glabrous or sparsely unicellular-hairy, margins eglandular-hairy;

corolla red to orange-red or orange, with indistinct darker blotch on upper lobe, funnelform, 36–53 mm, glabrous or very sparsely long stipitate-glandular-hairy, sometimes also sparsely unicellular-hairy on outer surface, petals connate, lobes 11–22 mm, tube abruptly expanded into lobes, 23–35 mm (± equaling or much longer than lobes);

stamens 5, much exserted, ± unequal, 64–84 mm.

borne on erect pedicels, 14–26 × 3–5.5 mm, sparsely to densely stipitate-glandular-hairy, otherwise moderately to densely unicellular-hairy.

borne on erect pedicels, 15–22 × 4.5–7 mm, densely, stiffly eglandular-hairy and sparsely unicellular-hairy.

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

testa expanded, dorsiventrally flattened, ± loose.

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

testa expanded, dorsiventrally flattened, ± loose.

bud scales densely to moderately unicellular-hairy abaxially, margins unicellular-ciliate, also partly glandular-serrate.

bud scales glabrous abaxially, margins unicellular-ciliate.

= 26.

= 26.