Jepson Flora Project: Jepson Interchange    

 
link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.

CUPRESSACEAE

CYPRESS FAMILY

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.

JUNIPERUS

JUNIPER

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]

Native

J. communis L.

COMMON JUNIPER

Shrub < 1 m, generally dioecious
Stem: bark red-brown, peeling in papery sheets
Leaves generally whorled in 3's, 6-ranked, sub-erect to spreading, needle- or awl-like, jointed to decurrent, nongreen base
Pollen cone 4–5 mm
Seed cone 5–8 mm, ± spheric, red maturing bright blue to black, glaucous, resinous
Seeds 1–3 per cone, 2–5 mm, ovoid, acute, generally 3-angled
Chromosomes: 2n=22
Ecology: Rocky or wooded slopes, high-elevation forests
Elevation: 1900–3400 m.
Bioregional distribution: North Coast, Klamath Ranges, High Cascade Range, High Sierra Nevada, Warner Mountains
Distribution outside California: circumboreal
Synonyms: vars. jackii Rehder, montana Aiton, saxatilis Pall
Horticultural information: DRN: 4, 5, 6, 17 &IRR: 1, 2, 7, 15, 16 &SHD: 3, 14, 18, 19, 20, 21, 22, 23.

previous taxon | next taxon
bioregional map for JUNIPERUS%20communis being generated
 
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Juniperus communis
Retrieve dichotomous key for Juniperus
Retrieve multiple-entry key (MEKA) for Juniperus
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page
Glossary
    FEEDBACK
  • This page is no longer being maintained.


University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California