Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



Jim A. Bartel

Shrub, tree, evergreen, monoecious or dioecious
Leaves cauline, opposite and 4-ranked or whorled in 3's and 6-ranked, generally scale-like, decurrent, completely covering young stems
Pollen cone small, axillary or terminal
Seed cone ± fleshy to woody, generally hard at maturity; scales opposite or whorled
Seeds 1–many per scale, generally angled or winged, generally wind-dispersed
Genera in family: 17 genera, ± 120 species: worldwide; all North America genera cultivated
Reference: [Elias 1980 Complete Trees North America]
Juvenile leaves needle- or awl-like, sometimes present in ± mature plants, especially in response to grazing or infection, especially in Cupressus, Juniperus.



Shrub, tree, generally dioecious
Stem: bark thin, peeling in strips; young shoots 4-angled to cylindric
Leaves opposite and 4-ranked or whorled in 3's and 6-ranked, scale-like to less often awl- or needle-like
Pollen cone: pollen sacs 2–6 per scale
Seed cone 5–18 mm, ± fleshy, berry-like, glaucous or not, dry or resinous, sweet, formed by fusion of scales, ± spheric, surrounded at base by minute scale-like bracts, generally maturing 2nd year; scales 3–8, opposite or whorled in 3's
Seeds 1–3(12) per cone, ± flat, unwinged, often not angled, generally animal-dispersed over 2 years; cotyledons 2–6
Species in genus: ± 60 species: n hemisphere
Etymology: (Latin: juniper)
Reference: [Vasek 1966 Brittonia 18:350–372]


J. californica Carrière


Shrub or tree 1–4(10) m, dioecious
Stem: trunks several at base; bark gray, thin, outer layers persistent
Leaves generally whorled in 3's, 6-ranked, closely appressed, scale-like; gland obvious
Pollen cone 2–3 mm, oblong
Seed cone 7–12 mm, spheric to ovoid, bluish maturing red-brown, dry
Seeds 1–3 per cone, 5–7 mm, pointed, angled, brown
Ecology: Dry slopes, flats, pinyon/juniper woodlands
Elevation: 50–1500 m.
Bioregional distribution: Inner North Coast Ranges, Sierra Nevada Foothills, San Francisco Bay Area, Inner South Coast Ranges, Transverse Ranges, Peninsular Ranges, Desert Mountains
Distribution outside California: s Nevada, nw Arizona, Baja California (Cedros, Guadalupe islands)
Horticultural information: DRN: 3, 6, 7, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 &IRR: 8, 9, 11, 12.

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bioregional map for JUNIPERUS%20californica being generated
N.B. The distribution depicted here differs from that given in The Jepson Manual (1993)

Retrieve Jepson Interchange Index to Plant Names entry for Juniperus californica
Retrieve dichotomous key for Juniperus
Retrieve multiple-entry key (MEKA) for Juniperus
Overlay Consortium of California Herbaria specimen data by county on this map
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