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 unicellular and multicellular eglandular-hairy and 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 densely unicellular-hairy and sparsely to densely multicellular eglandular-hairy;

blade ovate or obovate to elliptic, 4.3–7.1 × 1.8–2.9 cm, membranous, margins entire, plane, ciliate, multicellular eglandular-hairy, apex acute to obtuse, mucronate, surfaces sparsely scattered, multicellular eglandular-hairy, abaxial surface moderately to densely unicellular-hairy and multicellular eglandular-hairy, midvein densely unicellular-hairy and multicellular eglandular-hairy, secondary veins sometimes multicellular eglandular-hairy, adaxial surface sparsely to densely unicellular-hairy, midvein densely unicellular-hairy.

10–20-flowered;

bracts similar to bud scales.

5–9 flowered;

bracts similar to bud scales.

30–60 mm, glabrous.

5–11 mm, densely unicellular-hairy and sparsely to densely multicellular eglandular-hairy, sometimes multicellular glandular-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 after leaves have expanded, erect to horizontal, strongly fragrant (fresh during mid day);

calyx lobes 0.5–1 mm (often varying in length on same flower), margins setose, multicellular eglandular-hairy, abaxial surface sparsely to densely unicellular-hairy and multicellular eglandular-hairy, sometimes sparsely multicellular, weakly glandular-hairy;

corolla white, lobes pink tinged on newly opened flowers, with yellow to orange blotch on upper lobe (style white), funnelform, 24–50 mm, outer surface densely unicellular-hairy and sparsely to densely multicellular stipitate-glandular-hairy (glands usually weakly developed), inner surface densely unicellular-hairy, petals connate, upper lobe 9–17 mm, lateral lobes 11–25 mm, tube gradually expanding into lobes, 13–25 mm (equaling or much longer than lobes);

stamens 5, exserted, ± unequal, 45–67 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, 12–19 × 4–8 mm, sparsely to densely unicellular-hairy and multicellular eglandular-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 multicellular eglandular-hairy (hairs branched basally), and unicellular-hairy (hairs short to elongate) abaxially, margins eglandular-hairy (hairs branched).

bud scales glabrous abaxially, margins unicellular-ciliate near apex, glandular along proximal 2/3.

= 26.