Jepson eFlora: Taxon page
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Calycanthus occidentalis

Higher Taxonomy
Family: CalycanthaceaeView Description 

Habit: 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.
Genera In Family: 3 genera, +- 10 species: North America, China, Australia; Calycanthus, Chimonanthus cultivated as ornamental, for fragrance. Note: Notable for disjunctions.
eFlora Treatment Author: George P. Johnson & Fosiée Tahbaz
Scientific Editor: Thomas J. Rosatti.
Genus: CalycanthusView Description 

Flower: perianth maroon or red-brown, inner parts shorter.
Species In Genus: 2 species: California, eastern United States. Etymology: (Greek: cup flower, from hollow receptacle)

Calycanthus occidentalis Hook. & Arn.
Habit: Erect, 1--3+ m, +- rounded. Leaf: petiole 3--10 mm; blade 5--15 cm, ovate- to lance-oblong or ovate-elliptic, firm, base generally rounded (cordate), tip acute (obtuse), abaxially +- glabrous to +- hairy, adaxially +- scabrous. Flower: +- 5 cm diam; perianth +- fleshy, hairy; filaments < 1 mm, anthers 4--5 mm. Fruit: receptacle ovoid (bell-shaped), with scars of perianth parts; achenes 7--10 mm, +- velvety, margins granular. Chromosomes: n=11.
Ecology: Moist, shady places, canyons, streamsides; Elevation: generally < 1500 m. Bioregional Distribution: se KR, s NCoRO, NCoRI, s CaR, SNF, c&s SNH, SnJV (Kings River floodplain, e of Fresno), apparently naturalized n PR (Palomar Mtns). Flowering Time: Mar--Aug
eFlora Treatment Author: George P. Johnson & Fosiée Tahbaz
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botanical illustration including Calycanthus occidentalis


Citation for this treatment: George P. Johnson & Fosiée Tahbaz 2017. Calycanthus occidentalis, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 26, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on May 26, 2017.

Calycanthus occidentalis
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© 2002 California Academy of Sciences

More photos of Calycanthus occidentalis in CalPhotos

Geographic subdivisions for Calycanthus occidentalis:
se KR, s NCoRO, NCoRI, s CaR, SNF, c&s SNH, SnJV (Kings River floodplain, e of Fresno), apparently naturalized n PR (Palomar Mtns).
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.