Flora of North America species comparison

bark smooth, sometimes peeling or shredding with age;

twigs unicellular-hairy, papillate, with flattened, glandular scales (lepidote).

bark smooth to vertically furrowed, shredding;

twigs scattered, multicellular eglandular-hairy (hairs unbranched), otherwise densely to sparsely unicellular-hairy.

persistent, (fragrant when crushed);

petiole with glandular-peltate scales without broad rim and few, ferruginous, long-crisped hairs;

blade (white or pale green abaxially), ovate to lanceolate, (1–)2–8 × 1.5–3 cm, coriaceous, margins entire, plane, glabrous, apex usually acute, abaxial surface sparsely to densely papillate, with few, ferruginous, long-crisped hairs and glandular-peltate scales without broad rim, adaxial surface with scattered lepidote scales and/or papillae, sometimes also unicellular-hairy along midrib.

deciduous;

petiole usually multicellular eglandular-hairy and unicellular-hairy;

blade ovate to obovate, 3–9 × 1.2–3.7 cm, thin, membranous, margins entire, plane, conspicuously ciliate, eglandular-hairy (hairs ascending away from margins), apex acute to obtuse, often mucronate, abaxial surface sparsely to densely unicellular-hairy, sometimes also eglandular-hairy, adaxial surface usually sparsely unicellular-hairy, sometimes glabrous, often also scattered eglandular-hairy.

slightly rounded, 10–35-flowered;

bracts lepidote abaxially, margins ciliate, unicellular-hairy.

4–13-flowered;

bracts similar to bud scales.

4–25 mm, with dense to sparse, ferruginous, long-crisped, unicellular and/or peltate scales, sometimes also long-stalked, multicellular glandular-hairy.

5–26 mm, usually stipitate-glandular-hairy, or, sometimes, also eglandular-hairy, otherwise sparsely to moderately unicellular-hairy.

radially symmetric, opening after leaves (of flowering shoots), ± erect, fragrance not noticeable at mid day;

calyx lobes (often reflexed in fruit), ± 1–1.5 mm, outer surface densely to sparsely unicellular-hairy (hairs tan) and multicellular stipitate-glandular-hairy (hairs red) on margins;

corolla white to cream, without blotch, ± rotate, 2–8 mm, inner surface hairy proximally, outer surface glabrous, petals appearing distinct or only slightly connate basally, lobes (4–)5–7 mm;

stamens (8–)10(–12), exserted, ± equal, 4.5–8.4 mm.

opening before or with leaves, erect to horizontal, fragrant (spicy-scented);

calyx lobes 0.5–4 mm, surfaces and margins scattered stipitate-glandular- and/or eglandular-hairy, otherwise sparsely to densely unicellular-hairy;

corolla usually bright pink, without blotch on upper lobe, funnelform, 25–45 mm, scattered, multicellular stipitate-glandular-hairy (hairs not forming distinct lines), otherwise sparsely to moderately unicellular-hairy on outer surface, petals connate, lobes 10–23 mm, tube gradually expanded into lobes, 11–27 mm (equaling or longer than lobes);

stamens 5, much exserted, ± unequal, 32–53 mm.

borne on recurved pedicels, 2.5–5 × 2–6 mm (only slightly longer than wide), glabrous, acropetally dehiscent.

borne on erect pedicel, 10–28 × 3–7 mm, stipitate-glandular-hairy, otherwise sparsely unicellular-hairy.

somewhat elongated beyond narrow ends;

testa closely appressed.

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

testa expanded, dorsiventrally flattened, ± loose.

bud scales with peltate scales without broad rim and unicellular-hairy abaxially, margins unicellular-hairy.

bud scales very sparsely to densely unicellular-hairy abaxially, especially near midvein, margins unicellular-ciliate.

= 26.

= 26.