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Pinus torreyana subsp. insularis
SANTA ROSA ISLAND TORREY 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.
Species In Genus: 94 species: northern hemisphere. 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 vars.: 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
Species: Pinus torreyanaView Description 

Stem: trunk < 23 (< 33 in cultivation) m, < 1 m wide; mature crown open, rounded, branches many large; mature bark with red-brown plates between irregular furrows. Leaf: 5 per bundle, often 3 in young trees, 15--26 cm, stiff, gray-yellow- to gray-blue-green; sheath persistent. Seed Cone: spreading to recurved, < 16 cm, +- symmetric, +- longer than wide to much wider, scales dark brown, opening slowly 3rd year, persistent < 15 years; stalk < 4 mm; scale tip knobs pyramidal, light-colored, < 2 cm, minute-prickly. Seed: 16--24 mm, > wing, light brown to +- black, mottled or not, in cone < 13 years.

Unabridged Note: According to Zavarin et al. 1967 Phytochemistry 6:1019--1023, native stands showed differences in terpenoids (beta-phellandrene, limonene, cineole) for the subspecies.

Pinus torreyana subsp. insularis J.R. Haller
NATIVE
Stem: trunk < 15 m; mature crowns of sheltered plants generally wider than plant height, overall generally compact, with crowded branches. Leaf: generally gray-blue-green. Seed Cone: width generally > 13.5 cm, > length; scale tip knobs generally > 6 mm, > 1/3 scale thickness, entire knob curved outward. Seed: generally > 11 mm wide, medium brown to +- black.
Ecology: Forming densely forested strip on +- n-facing slope parallel to coast, with scattered chaparral, island woodland components; Elevation: < 150 m. Bioregional Distribution: n ChI (Santa Rosa Island). Note: < 1000 trees. Threatened by browsing of young pls, small population size. Not well established when planted at a few localities in coastal Santa Barbara Co.
eFlora Treatment Author: J. Robert Haller & Nancy J. Vivrette
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Listed on CNPS Rare Plant Inventory

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Citation for this treatment: J. Robert Haller & Nancy J. Vivrette 2016. Pinus torreyana subsp. insularis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=52310, accessed on December 08, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on December 08, 2016.


Pinus torreyana subsp. insularis
click for enlargement
© 2013 Gary A. Monroe
Pinus torreyana subsp. insularis
click for enlargement
© 2013 Gary A. Monroe
Pinus torreyana subsp. insularis
click for enlargement
© 2005 Dieter Wilken
Pinus torreyana subsp. insularis
click for enlargement
© 2013 Gary A. Monroe
Pinus torreyana subsp. insularis
click for enlargement
© 2013 Gary A. Monroe
Pinus torreyana subsp. insularis
click for enlargement
© 2013 Gary A. Monroe

More photos of Pinus torreyana subsp. insularis in CalPhotos


Geographic subdivisions for Pinus torreyana subsp. insularis:
n ChI (Santa Rosa Island).
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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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.