Hammon, R.W.; Peairs, F.B. 2001. Black grass bugs. Fact Sheet No. 5.575. Fort Collins, CO: Colorado State University Cooperative Extension. 2 p.
Sampangi, R.K.; Almeyda, C.; Druffel, K.L.; Mohan, S.K.; Shock, C.C.; Pappu, H.R. 2009. First report of natural infection of Penstemon acuminatus with cucumber mosaic virus in the Treasure Valley region of Idaho and Oregon. Plant Disease. 93(7): 762.
Pike, K.S.; Graf, G.; Foottit, R.G.; Maw, H.E.L.; Star?«, P.; Hammon, R.; Miller, D.G. 2009. New species of Braggia (Hemiptera:Aphididae) on buckwheat in western North America. Canadian Entomologist. 141: 561-581.
Sampangi, R.K.; Aime, M.C.; Mohan, S.K.; Shock, C.C. 2010. New and re-emerging rust diseases from Idaho and Oregon. Phytopathology. 100: S113.
Sampangi, R.K.; Aime, M.C.; Mohan, S.K. 2010. First report of rust caused by Puccinia similis on Artemisia tridentata in Idaho and Oregon. Plant Disease. 94(3): 380.2
Hammon, R.; Franklin, M. 2012. Some insects affecting Penstemon seed production. Native Plants Journal. 13(2): 107-111.
Hammon, R.; Franklin, M. 2012. Seed-feeding insects impacting globemallow seed production. Native Plants Journal. 13(2): 95-97.
Ogle, D.G.; Peterson, J.S.; St. John, L. 2014. Plant guide: Rocky Mountain penstemon (Penstemon strictus). Aberdeen, ID: U.S. Department of Agriculture, Natural Resources Conservation Service, Plant Materials Center. 4 p.
Cane, J.H.; Johnson, C., Napoles, J.R.; Johnson, D.A; Hammon, R. 2013. Seed-feeding beetles (Bruchinae, Curculionidae, Brentidae) from legumes (Dalea ornata, Astragalus filipes) and other forbs needed for restoring rangelands of the Intermountain West. Western North American Naturalist. 73(4): 477-484.
Braun, U.; Mohan, S.K. 2013. New records and new host plants of powdery mildews (Erysiphales) from Idaho and Oregon (USA). Schlechtendalia. 27: 7-10.
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