You are here: Home
/ Publication Information
Title: Crossability and relationships of Washoe pine
Author: Critchfield, William B.
Source: Madroño, Vol. 31, No. 3: p. 144-170
Publication Series: Miscellaneous Publication
Description: Washoe 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.
- 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.
- 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.)
XML: View XML
Critchfield, William B. 1984. Crossability and relationships of Washoe pine. Madroño, Vol. 31, No. 3: p. 144-170
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility