Skip to Main Content
Analysis of three microscopic characters for separating the wood of Pinus contorta and P. ponderosaAuthor(s): Alex C. Wiedenhoeft; Regis B. Miller; Terra J. Theim
Source: IAWA journal. Vol. 24, no. 3 (2003): Pages 257-267
Publication Series: Miscellaneous Publication
PDF: Download Publication (187 KB)
DescriptionThree microscopic characters were evaluated for the identification of Pinus contorta and Pinus ponderosa. The tangential diameter of the resin canals, including the epithelium, was compared to the tangential diameter of the entire resin canal complex. The latter measurement was shown to give diagnostic results for these species. Data from the examination of ray composition do not support previously published methods for separating P. contorta and P. ponderosa. The presence or absence of small elongate crystals in the subsidiary parenchyma of the resin canal complexes was shown to be the most powerful diagnostic character for separating the wood of these species.
- 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.
CitationWiedenhoeft, Alex C.; Miller, Regis B.; Theim, Terra J. 2003. Analysis of three microscopic characters for separating the wood of Pinus contorta and P. ponderosa. IAWA journal. Vol. 24, no. 3 (2003): Pages 257-267
KeywordsResin canal, wood anatomy, wood identification, Pinus contorta, Pinus ponderosa
- Should ponderosa pine be planted on lodgepole pine sites?
- Pinus contorta X banksiana hybrids tested in northern Rocky Mountains
- A ponderosa pine-lodgepole pine spacing study in central Oregon: results after 20 years.
XML: View XML