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George P. Johnson & Fosiée Tahbaz

Shrub, deciduous [evergreen], aromatic. Leaf: opposite, simple, entire; stipules 0; petiole short. Inflorescence: flowers 1, terminal on short branches. Flower: bisexual, radial; receptacle hollow; parts generally many, spirally arranged; perianth parts ± petal-like, grading into bracts below; stamens on top of receptacle, smaller, sterile inward, filaments < anthers [0]; pistils simple, on inner face of receptacle, 2-ovuled, style thread-like, exserted from receptacle. Fruit: achenes many, included in ± leathery receptacle.
3 genera, ± 10 species: North America, China, Australia; Calycanthus, Chimonanthus cultivated as ornamental, for fragrance. [Zhou et al. 2006 Molec Phylogen Evol 39:1–15] Notable for disjunctions. —Scientific Editor: Thomas J. Rosatti.

Previous taxon: Asarum marmoratum
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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora,, accessed on Nov 29 2015
Citation for this treatment: [Author of taxon treatment] 2013. Calycanthaceae, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on Nov 29 2015

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