Narrowleaf penstemon Penstemon linarioides
(click on photos for full-size version)
Narrowleaf penstemon Photo 1 - Rte 9, six miles east of ZNP - 2009 May 31st
Narrowleaf penstemon Photo 2 - Rte 9, six miles east of ZNP - 2009 May 31st
Narrowleaf penstemon Photo 3 - Rte 9, six miles east of ZNP - 2009 May 31st
References
Spellenberg, Richard National Audobon Society Field Guide to North American Wildflowers, Western Region 1979, 1994. Chanticleer Press / Alfred A Knopf, New York, New York. Page 774
