Charters, M.L. 2012. California Plant Names: Latin and Prepared By Greek Meanings and Derivations. [Online] Available USDA NRCS Plant Materials Center, Pamela L.S. Pavek, at: http://www.calflora.net/botanicalnames/ Pullman, Washington (accessed 17 Jan 2012). Hitchcock, C.L. and A. Cronquist. 1973. Flora of the USDA NRCS Plant Materials Center, David M. Skinner, Pacific Northwest. University of Washington Press, Pullman, Washington (retired) Seattle and London. Citation Lyons, C.P. and B. Merilees. 1995. Trees, Shrubs and Pavek, P.L.S., and D.M. Skinner 2012. Plant guide for Flowers to Know in Washington and British taper-leaved penstemon (Penstemon USDA Columbia. Lone Pine Press, Auburn, WA, attenuatus). Natural Resources Conservation Service, Pullman Plant Vancouver, BC, and Edmonton, AB. Materials Center. Pullman, WA. Rugged Country Plants. 2012. [Online] Available at: Published February 2012 (Accessed 18 Jan 2012). Skinner, D.M. 2007. Propagation protocol for production Edited: 18Jan2012 dms; 07Feb2012 mes; 17Feb2012 jab; of container Dougl. ex Lindl. Penstemon attenuatus 17Feb2012 plsp plants (10 cu in); USDA-NRCS Pullman Plant Materials Center, Pullman, Washington. In: Native For more information about this and other plants, please Plants Network. [Online]. Available at: contact your local NRCS field office or Conservation http://www.nativeplantnetwork.org (accessed 17 District at and visit the PLANTS Web site at or the Plant January 2012). Moscow, ID: University of Idaho, Materials Program Web site . College of Natural Resources, Forest Research Nursery. PLANTS is not responsible for the content or availability Strickler, D. 1997. Northwest Penstemons. The Flower of other Web sites. Press, Columbia Falls, MT.
Charters, M.L. 2012. California Plant Names: Latin and Greek Meanings and Derivations. [Online] Available at: http://www.calflora.net/botanicalnames/ (accessed 17 Jan 2012). Hitchcock, C.L. and A. Cronquist. 1973. Flora of the Pacific Northwest. University of Washington Press, Seattle and London. Lyons, C.P. and B. Merilees. 1995. Trees, Shrubs and Flowers to Know in Washington and British Columbia. Lone Pine Press, Auburn, WA, Vancouver, BC, and Edmonton, AB. Rugged Country Plants. 2012. [Online] Available at: (Accessed 18 Jan 2012). Skinner, D.M. 2007. Propagation protocol for production of container Penstemon attenuatus Dougl. ex Lindl. plants (10 cu in); USDA-NRCS Pullman Plant Materials Center, Pullman, Washington. In: Native Plants Network. [Online]. Available at: http://www.nativeplantnetwork.org (accessed 17 January 2012). Moscow, ID: University of Idaho, College of Natural Resources, Forest Research Nursery. Strickler, D. 1997. Northwest Penstemons. The Flower Press, Columbia Falls, MT. Prepared By Pamela L.S. Pavek, USDA NRCS Plant Materials Center, Pullman, Washington David M. Skinner, USDA NRCS Plant Materials Center, Pullman, Washington (retired) Citation Pavek, P.L.S., and D.M. Skinner 2012. Plant guide for taper-leaved penstemon (Penstemon attenuatus). USDA Natural Resources Conservation Service, Pullman Plant Materials Center. Pullman, WA. Published February 2012 Edited: 18Jan2012 dms; 07Feb2012 mes; 17Feb2012 jab; 17Feb2012 plsp For more information about this and other plants, please contact your local NRCS field office or Conservation District at and visit the PLANTS Web site at or the Plant Materials Program Web site . PLANTS is not responsible for the content or availability of other Web sites.
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