接受名：Calycanthus floridus L. var. oblongifolius (Nuttall) D. E. Boufford et S. A. Spogbe (accepted name)

异名：Beurera ferax (Michx.) Kuntze (synonym)、Beurera fertilis (Walt.) Kuntze (synonym)、Butneria fertilis (Walt.) Kearney (synonym)、Butneria fertilis (Walt.) Kearney var. ferx (Michx.) Schneid. (synonym)、Butneria fertilis (Walt.) Kearney var. glauca (Willd.) Schneider (synonym)、Butneria nana (Loisel) Small (synonym)、Calycanthus ferax Michx. (synonym)、Calycanthus fertilis Walt. (synonym)、Calycanthus fertilis (Walt.) Kearney var. oblongifolius (Nutt.) Rehder (synonym)、Calycanthus fertilis Walt. var. ferax (Michx.) Rehder (synonym)、Calycanthus fertilis Walt. var. glaucus (Willd.) Rehder (synonym)、Calycanthus floridus L. var. glaucus (Willd.) Torrey et Gray (synonym)、Calycanthus floridus L. var. inodorus (Elliott) Torrey et Gray (synonym)、Calycanthus floridus L. var. laevigatus (Willd.) Torr. et Gray (synonym)、Calycanthus glaucus Willd. (synonym)、Calycanthus glaucus Willd. var. oblongifolius Nutt. (synonym)、Calycanthus inodorus Elliott (synonym)、Calycanthus laevigatus Willd. (synonym)、Calycanthus nanus Loisel. (synonym)、Calycanthus pennsylvanicus Lodd. ex Loudon (synonym)、Calycanthus reticulatus Raf. (synonym)、Calycanthus verrucosus Raf. (synonym)

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var. laevigatus (Willd.) Torr. et Gray, Fl. N. Am. 1: 475. 1840; K. A. Nicely in Castanea 30: 66. 1965. ——Calycanthus laevigatus Willd. Enum. Pl. Hort. Berol. 559. 1809.

与原变种的不同在于本变种的叶、叶柄及枝条均无毛或几无毛。花期6月。

栽培于江西庐山植物园。原产于北美。

观赏植物。