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.

PINACEAE

PINE FAMILY

James R. Griffin

Tree or shrub, monoecious, evergreen
Stem: young crown conic; twig not grooved, resinous, generally persistent
Leaves simple, generally alternate, sometimes in bundles or appearing ± 2-ranked, linear or awl-like; bases decurrent, sometimes woody, persistent several years
Pollen cone generally < 6 cm, not woody, deciduous
Seed cone generally woody; bracts, scales generally persistent; scale not peltate, fused to or free from subtending bract
Seeds 2, on upper side of scale base
Genera in family: 10 genera, 193 species: mostly n hemisphere; many of great commercial value, supplying > half of world's timber
Reference: [Price 1989 J Arnold Arbor 70:247–305]

PINUS

PINE


Stem: young crown conic, mature crown often rounded or flat; branches ± whorled in young plants; young bark smooth, mature bark furrowed; bud ± conic, generally resinous
Leaves generally 2.5–35 cm, generally sessile, in bundles of 1–5; bundles solitary in axils of alternate, awl-like bracts, each bundle enclosed at base in a sometimes deciduous sheath of bracts, generally persistent several seasons
Seed cones often whorled, generally maturing and opening 2nd season, sometimes persistent on stem; stalk 0 or < 16 cm; bract included, fused to scale, minute; scale tip reflexed and elongated 3–7 cm, or often with a rounded or angled, often prickled knob < 3 cm
Seed: coat hard, sometimes woody
Chromosomes: 2n=24 for all reports
Species in genus: 94 species: n hemisphere
Etymology: (Latin: pine)
Reference: [Millar & Critchfield 1988 Madroño 35:39–53]

Native

P. balfouriana Grev. & Balf.

FOXTAIL PINE


Stem: trunk generally single, < 22 m, < 2.6 m wide; mature crown branches short, thick
Leaves 5 per bundle, 1.5–4 cm, curved, stiff; outer surface ± green, inner white; tip acute, sharp to touch; sheath deciduous
Seed cone pendent, 6–19 cm, ovoid; stalk 7–16 mm; scale tip knobs < 1 mm, angled, with very small prickles
Seed < wing
Ecology: Subalpine forest
Elevation: 2100–3700 m.
Bioregional distribution: Klamath Ranges, High North Coast Ranges, s High Sierra Nevada.

Native

subsp. balfouriana


Stem: mature bark thin, gray-brown, in narrow ridges
Leaves ± blue-green, persisting < 15 years
Ecology: Habitats of sp.
Elevation: 2100–2500 m.
Bioregional distribution: Klamath Ranges, High North Coast Ranges
Horticultural information: DRN: 1, 4, 5, 6 &IRR: 2, 3, 7; DFCLT.

previous taxon | next taxon
bioregional map for PINUS%20balfouriana%20subsp.%20balfouriana 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 Pinus balfouriana subsp. balfouriana
Retrieve dichotomous key for Pinus
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