Jepson Herbarium
The University and Jepson Herbaria
University of California, Berkeley
Jepson eFlora: Taxon page
Vascular Plants of California
Key to families | Table of families and genera
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M |
| N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon

Pinus jeffreyi

JEFFREY PINE


Higher Taxonomy
Family: PinaceaeView DescriptionDichotomous Key
Common Name: PINE FAMILY
Habit: Shrub, tree, evergreen; monoecious. Stem: young crown conic; twig not grooved, resinous, generally persistent. Leaf: simple, generally alternate, sometimes in bundles or appearing +- 2-ranked, linear or awl-like; base decurrent, woody or not, 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. Seed: 2, on scale base adaxially.
Genera In Family: 10 genera, 193 species: generally northern hemisphere; many of great commercial value, supplying > 1/2 of world's timber.
eFlora Treatment Author: J. Robert Haller, Nancy J. Vivrette, & James R. Griffin, except as noted
Scientific Editor: Thomas J. Rosatti, Bruce G. Baldwin.
Genus: PinusView DescriptionDichotomous Key


Common Name: PINE
Stem: young crown conic, mature often rounded or flat; branches +- whorled in young plants; young bark smooth, mature furrowed; bud +- conic, generally resinous. Leaf: generally 2.5--35 cm, generally sessile, in bundles of (1)2--5; bundles 1 in axils of alternate, awl-like bracts, base in a sometimes deciduous, scaly sheath of bracts, generally persistent several years. Seed Cone: often whorled, generally maturing, opening 2nd year, persistent on stem or not; stalk 0 or < 16 cm; bract included, fused to scale at least basally, minute; scale tip reflexed, elongated 3--7 cm or often with a rounded or angled, often prickled knob < 3 cm. Seed: coat hard, woody or not. Chromosomes: 2n=24.
Etymology: (Latin: pine) Note: Pinus pinea L., stone pine (leaves 2 per bundle, 10--30 cm; seed cone 8--15 cm, maturing in 3 years) cultivated in Europe for over 6000 years for edible seeds (pine nuts), reportedly naturalized in SnFrB, northern ChI.
Unabridged Note: Morphological, genetic study of relationships among Pinus jeffreyi, Pinus ponderosa, and Pinus washoensis indicates that the taxa should be classified as 2 species, Pinus jeffreyi and Pinus ponderosa, and that the latter comprises three varieties: Pinus ponderosa var. pacifica (new taxon), Pinus ponderosa var. ponderosa, and Pinus ponderosa var. washoensis (new combination).
eFlora Treatment Author: J. Robert Haller & Nancy J. Vivrette
Unabridged Reference: Millar & Critchfield 1988 Madroño 35:39--53
Pinus jeffreyi Grev. & Balf.
NATIVE
Stem: trunk < 53 m, < 2.3 m wide; mature bark generally red-brown, furrows close-spaced, deep, outer scales with +- pink inner surfaces, crevices with definite odor of vanilla/banana, especially on warm days; mature crown rounded; buds not resinous, scales light brown, white-hairy. Leaf: 3 per bundle, 12--27 cm, thick, gray-blue-green, glaucous; sheath persistent. Seed Cone: spreading or recurved, generally 13--25 cm, ovate to +- oblong, brown, when immature light green to red-purple; stalk < 3 cm, persistent with proximal scales; scales generally not darker abaxially than adaxially, in open cone +- crowded, tips recurved, elongated < 3 cm; knob prickles incurved; bracts with white fringing hairs.
Ecology: Upper mixed-conifer, red-fir forests, elsewhere on serpentine; Elevation: 450--3100 m. Bioregional Distribution: KR, NCoR, CaR, SN, SCoRI, TR, PR, GB; Distribution Outside California: southwestern Oregon, western Nevada, northern Baja California.
Jepson eFlora Author: J. Robert Haller & Nancy J. Vivrette
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

Previous taxon: Pinus flexilis
Next taxon: Pinus lambertiana

Botanical illustration including Pinus jeffreyibotanical illustration including Pinus jeffreyi


Please use this Google Form for Contact/Feedback

Citation for this treatment: J. Robert Haller & Nancy J. Vivrette 2012, Pinus jeffreyi, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=38279, accessed on December 03, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on December 03, 2024.

Pinus jeffreyi
click for image enlargement
©2017 Keir Morse
Pinus jeffreyi
click for image enlargement
©1999 California Academy of Sciences
Pinus jeffreyi
click for image enlargement
©2016 California Academy of Sciences
Pinus jeffreyi
click for image enlargement
©2017 Keir Morse
Pinus jeffreyi
click for image enlargement
©2020 Neal Kramer

More photos of Pinus jeffreyi
in CalPhotos



Geographic subdivisions for Pinus jeffreyi:
KR, NCoR, CaR, SN, SCoRI, TR, PR, GB
MAP CONTROLS
1. You can change the display of the base map layer control box in the upper right-hand corner.
2. County and Jepson Region polygons can be turned off and on using the check boxes.
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 occurrence).






 

Data provided by the participants of the  Consortium of California Herbaria.

MAP LEGEND
View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS

CCH collections by month Flowering-Fruiting Monthly Counts

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).