Clethra alnifolia var. denudata
| Clethra alnifolia Linnaeus, var. denudata Aiton, Hort. Kew. 2: 73. 1789, nom. inadmiss. | BASIONYM: Clethra alnifolia Linnaeus 1753. | |
Clethra alnifolia var. glabella
| Clethra alnifolia Linnaeus, var. glabella Michaux, Fl. Bor.-Amer. 1: 260. 1803, nom. inadmiss. | BASIONYM: Clethra alnifolia Linnaeus 1753. | |
Clethra alnifolia var. tomentosa
| Clethra alnifolia Linnaeus, var. tomentosa Michaux, Fl. Bor.-Amer. 1: 260. 1803. | | TYPE: SOUTH CAROLINA: |
Clethra angustifolia
| Clethra angustifolia Rafinesque, Autik. Bot. 6. 1840, non de Candolle 1838. | | TYPE: FLORIDA: |
Clethra bracteata
| Clethra bracteata Rafinesque, Autik. Bot. 7. 1840. | | TYPE: FLORIDA: |
Clethra incana
| Clethra incana Persoon, Syn. Pl. 1: 483. 1805, nom. illegit. | BASIONYM: Clethra tomentosa Lamarck 1786. | |
Clethra tomentosa
| Clethra tomentosa Lamarck, Encycl. 2: 46. 1786. | | |
Clethra alnifolia forma michauxii
| Clethra alnifolia Linnaeus, forma michauxii (Courtois) Zabel, in Beissner et al., Handb. Laubholzben. 372. 1903. | BASIONYM: Clethra michauxii Courtois 1833. | |
Clethra alnifolia forma paniculata
| Clethra alnifolia Linnaeus, forma paniculata (Aiton) Zabel, in Beissner et al., Handb. Laubholzben. 372. 1903. | BASIONYM: Clethra paniculata Aiton 1789. | |
Clethra alnifolia forma rosea
| Clethra alnifolia Linnaeus, forma rosea Rehder, Mitt. Deutsch. Dendrol. Ges. 16: 75. 1908. | | TYPE: MASSACHUSETTS: |
Clethra alnifolia forma scabra
| Clethra alnifolia Linnaeus, forma scabra (Persoon) Zabel, in Beissner et al., Handb. Laubholzben. 372. 1903. | BASIONYM: Clethra scabra Persoon 1805. | |
Clethra alnifolia var. michauxii
| Clethra alnifolia Linnaeus, var. michauxii (Courtois) G. Nicholson, Hand-List Trees 2: 97. 1896. | BASIONYM: Clethra michauxii Courtois 1833. | |
Clethra alnifolia var. paniculata
| Clethra alnifolia Linnaeus, var. paniculata (Aiton) G. Nicholson, Hand-List Trees 2: 97. 1896. | BASIONYM: Clethra paniculata Aiton 1789. | |
Clethra alnifolia var. pubescens
| Clethra alnifolia Linnaeus, var. pubescens Aiton, Hort. Kew. 2: 73. 1789. | | |
Clethra alnifolia var. scabra
| Clethra alnifolia Linnaeus, var. scabra (Persoon) G. Nicholson, Hand-List Trees 2: 97. 1896. | BASIONYM: Clethra scabra Persoon 1805. | |
Clethra michauxii
| Clethra michauxii Curtois, Mag. Hort. 1: 249. 1833. | | |
Clethra paniculata
| Clethra paniculata Aiton, Hort. Kew. 2: 73. 1789. | | |
Clethra pubescens
| Clethra pubescens (Aiton) Willdenow, Enum. Pl. 455. 1809. | BASIONYM: Clethra alnifolia Linnaeus, var. pubescens Aiton 1789. | |
Clethra pumila
| Clethra pumila Rafinesque, Autik. Bot. 7. 1840. | | TYPE: NEW JERSEY: |
Clethra scabra
| Clethra scabra Persoon, Syn. Pl. 1: 483. 1805. | | |