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Discovering Gray Pine (Pinus sabiniana) in Oregon
Until fairly recently, gray pine was believed to be restricted to California, where John Muir encountered it. But the fi rst report of it in Oregon dates back to 1831, when David Douglas wrote to theExpand
Geographic variation in the leaf essential oils of Douglas Fir (Pseudotsuga menziesii)
The volatile leaf oils of Douglas fir (Pseudotsuga menziesii) were analyzed from throughout its range. The major differentiation found was the divergence of the inland populations (var. glauca) fromExpand
Taxonomy of Hesperocyparis montana, H. revealiana and H. stephensonii: Evidence from leaf essential oils analyses and DNA sequences
DNA sequences and leaf essential oils were analyzed from Hesperocyparis montana H. revealiana and H. stephensonii. The cpDNA sequences placed H. stephensonii in a clade with H. arizonica, H.Expand
Chlorogalum pomeridianum (D.C.) Kunth ssp. austrooreganum Callahan (Asparagaceae), a new subspecies from Jackson County, Oregon, and adjacent Siskiyou County, California
A new subspecies of Chlorogalum pomeridianum (D.C.) Kunth is described as C. pomeridianum (de Candolle) Kunth ssp. austrooreganum Callahan A suggested common name, "southern Oregon amole," isExpand
Two new subspecies of Calochortus umpquaensis (Liliaceae) from southwestern Oregon: C. umpquaensis Fredricks ssp. confertus Callahan and C. umpquaensis Fredericks ssp. flavicomus Callahan
Two new subspecies are described for Calochortus umpquaensis Fredricks: C. umpquaensis Fredricks ssp. confertus Callahan and C. umpquaensis Fredericks ssp. flavicomus Callahan. Both subspecies areExpand
Taxonomy of Douglas fir (Pseudotsuga menziesii) infraspecific taxa: vars. menziesii, glauca and oaxacana: nrDNA, cpDNA sequences and leaf essential oils
Six chloroplast DNA regions of Douglas fir (Pseudotsuga menziesii) from trees in 11 populations from Washington southward to Oaxaca, Mexico were sequenced yielding 4857 bp of data as well asExpand
AN ALYSIS OF PUTATIVE HYBRIDS OF HESPEROCYPARIS GLABRA X H. PYGMAEA BY LEAF ESSENTIAL OILS
The leaf volatile oils of three putative, spontaneous hybrids between Hesperocyparis glabra and H. pygmaea were analyzed and compared to typical oils of the parents as well as twelve F2s derived fromExpand
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