Skip to Main Content
Crossability and relationships of Washoe pineAuthor(s): William B. Critchfield
Source: Madroño, Vol. 31, No. 3: p. 144-170
Publication Series: Miscellaneous Publication
PDF: View PDF (2.8 MB)
DescriptionWashoe pine, related to ponderosa pine but occurring at higher elevations along the western edge of the Great Basin, crosses freely with the Rocky Mountain race of ponderosa despite evidence of long-term separation. Washoe is morphologically distinct from the parapatric Pacific race of ponderosa pine, and the two taxa are kept separate partly by genetic barriers that reduce seed yield by about two-thirds. Washoe pine most closely resembles North Plateau ponderosa pine, and may be a late-Pleistocene offshoot of this race, which occupies the Pacific Northwest interior.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationCritchfield, William B. 1984. Crossability and relationships of Washoe pine. Madroño, Vol. 31, No. 3: p. 144-170
- Predictions of fire behavior and resistance to control: for use with photo series for the ponderosa pine type, ponderosa pine and associated species type, and lodgepole pine type.
- Estimating the avoided fuel-reatment costs of wildfire
- Natural regeneration in relation to environment in the mixed conifer forest type of California
XML: View XML