Common Names
Island Torrey pine (1).Taxonomic notes
Syn: Pinus torreyana subsp. insularis Haller 1986.Description
"Trees 10(-15) m in native stands; mature crown of sheltered trees broader than tree height, compact in natural sites. Seed cones broader than long, mostly over 13.5 cm; umbos mostly more than 6 mm, whole umbo curved outward. Seeds to 14 mm wide, averaging over 11 mm, brown to dark brown with darker mottling" (1).Range
USA: California: occurs naturally only on the E end of Santa Rosa Island (elevation 130-180 m). Habitat dry fogbelt zone, ravines and low ridges. Species is rare, so of conservation concern (1). Population about 2,000 trees, inclusive of seedlings and saplings (2).Big Tree
Oldest
Dendrochronology
Ethnobotany
Observations
Santa Rosa Island is part of the Channel Islands National Park. Access to the islands is controlled by the National Park Service.Remarks
Citations
(1) Kral in the Flora of North America online.(2) F.T. Ledig & M.T. Conkle 1983. Gene diversity and genetic structure in a narrow endemic, Torrey pine. Evolution 37: 79-85.
See also:
Haller, J.R. 1986. Taxonomy and relationships of the mainland and island populations of Pinus torreyana (Pinaceae). Systematic Botany 11:39-50.
This page co-edited with M.P. Frankis, Mar-1999.
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This page is from the Gymnosperm Database
URL: http://www.geocities.com/~earlecj/pi/pin/insularis.htm
Edited by Christopher J. Earle
E-mail:earlecj@earthlink.com
Last modified on 3-Mar-1999