Verbatim text: Johnston, B.C. 2006. Ptilagrostis porteri (Rydberg) W.A. Weber (Porter's False Needlegrass): A technical conservation assessment. Species Conservation Project Report. U.S. Department of Agriculture-Forest Service, Rocky Mountain Region, Lakewood, Colorado, U.S.A. 62 pp. http://www.fs.fed.us/r2/projects/scp/assessments/ptilagrostisporteri.pdf.
Author: Johnston, B.C.
Year: 2006
Title: Ptilagrostis porteri (Rydberg) W.A. Weber (Porter's False Needlegrass): A technical conservation assessment
Pages: 62
URL: http://www.fs.fed.us/r2/projects/scp/assessments/ptilagrostisporteri.pdf.