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Jim A. Bartel, except as noted

Shrub, tree, generally evergreen; monoecious or dioecious. Leaf: simple, cauline, alternate or opposite (either ± 4-ranked) or whorled in 3s (6-ranked), linear or scale-, awl- or needle-like (sometimes linear and awl-like on 1 plant, or on juvenile or injured plants), generally decurrent, covering young stems. Pollen cone: axillary or terminal. Seed cone: ± fleshy to generally woody, generally hard at maturity; scales opposite or whorled, peltate or not. Seed: 1–many per scale, angled or lateral winged, generally wind-dispersed.
30 genera, 130+ species: ± worldwide, especially North America, Eurasia. [Farjon 2005 Monogr Cupressaceae Sciadopitys. RBG, Kew] Incl (paraphyletic) Taxodiaceae. Taxa of (polyphyletic) Cupressus in TJM (1993) now in Callitropsis, Chamaecyparis, Hesperocyparis. —Scientific Editor: Thomas J. Rosatti.

Key to Cupressaceae


John W. Thieret, final revision by Jim A. Bartel

Tree, generally widely conic; monoecious. Stem: young shoots flat, in flat clusters. Leaf: opposite, 4-ranked, appearing whorled in 4s, scale-like, closely appressed, overlapping, exposed part longer than wide; leaf bases elongated on smallest shoots. Seed cone: ± pendent, woody, ± oblong, maturing 1st year; scales in 3 partially overlapping pairs, middle pair fertile, free, ± spreading, distal pair united, sterile. Seed: 2 per fertile scale, flat, wings 2, unequal; cotyledons 2.
3 species: western North America, eastern Asia. (Greek: beautiful cedar)

C. decurrens (Torr.) Florin
Tree 20–69 m. Stem: trunk < 4 m diam, tapered from wide base; bark 1–2.5+ cm thick, fibrous, cinnamon-red; lower branches down-curved. Leaf: 3–10 mm. Pollen cone: 5–7 mm, oblong, light yellow. Seed cone: 17–35 mm, light red-brown. Seed: 14–25 mm, including wing, ± yellow to red-brown, maturing fall.
Common. Mixed-evergreen, yellow-pine forests; 350–2500 m. Klamath Ranges, North Coast Ranges, Cascade Range, Sierra Nevada, South Coast Ranges, Transverse Ranges, Peninsular Ranges, Modoc Plateau; Oregon, western Nevada, northern Baja California. [Libocedrus decurrens Torr.] Frequently planted as an ornamental. [Online Interchange]

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Next taxon: Chamaecyparis


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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora,, accessed on Nov 24 2015
Citation for this treatment: [Author of taxon treatment] 2013. Calocedrus, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on Nov 24 2015

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Geographic subdivisions indicated for the distribution of Calocedrus decurrens Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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.