A Field Guide to Western Trees : Western United States and Canada

by Roger Peterson, Olivia Petrides, George Petrides


This newly designed field guide features detailed descriptions of 387 species, arranged in six major groups by visual similarity. The 47 color plates and 5 text drawings show distinctive details needed for identification. Color photographs and 295 color range maps accompany the species descriptions.

  • ISBN-13/ EAN: 9780395904541
  • ISBN-10: 0395904544
  • Pages: 448
  • Publication Date: 07/25/1998
  • Carton Quantity: 32
About the Book
About the Authors
Excerpts
  • This newly designed field guide features detailed descriptions of 387 species, arranged in six major groups by visual similarity. The 47 color plates and 5 text drawings show distinctive details needed for identification. Color photographs and 295 color range maps accompany the species descriptions.

    Subjects

    Plants/Trees

    Related Subjects

    Peterson Field Guides

  • TWO-NEEDLE PINYON Pinus edulis Engelm. Pl. 1 A short, round-topped, arid-zone tree mainly of the s. Rockies. Needles 2 per cluster, 3?4–2 in. long, dark green, sharp but not spiny. Cones short, 1–2 in. long, somewhat spherical, with thick, blunt, thornless scales and 2 wingless half-inch nuts per scale. Height 15–20 (50) ft.; diameter 1–2 (3) ft. Dry sites. Similar species: See Lodgepole Pine. Remarks: Like the other nut pines (see Singleleaf Pinyon), the fruits are eagerly sought by wildlife and humans alike. Reported to be the most common tree in N.M. A single- needle population is reported to occur in cen. Ariz. Resin from trunk wounds is said to have been used by Native Americans to waterproof woven bottles and to cement turquoise jewelry.