45. Geils, B.W. 2001. Leafy Mistletoe. Maloy, O.C.; Murray, T.D., eds. Encyclopedia of Plant Pathology. New York, NY: J. Wiley and Sons, Inc.: 613–616.

44. Geils, B.W. 2001. Dwarf Mistletoe. Maloy, O.C.; Murray, T.D., eds. Encyclopedia of Plant Pathology. New York, NY: J. Wiley and Sons, Inc.: 386–389.

43. Hamelin, R. C.; Hunt, R. S.; Geils, B. W.; Jensen, G. D.; Jacobi, V.; and Lecours, N. 2000. Barrier to gene flow between eastern and western populations of Cronartium ribicola in North America. Phytopathology. 90:1073–1078.

42. Wagner, M.R.; Block, W.M.; Geils, B.W. and Wenger, K.F. 2000. Restoration ecology: a new forest management approach or another merit badge for foresters. Journal of Forestry. 98(10):22–27.

41. Geils, B.W. 2000. Establishment of white pine blister rust in New Mexico. HortTechnology. 10(3):528-529.

40. Geils, B.W.; Conklin, D.A.; Van Arsdel, E.P. 1999. A preliminary hazard model of white pine blister rust for the Sacramento Ranger District, Lincoln, National Forest. Research Note. RMRS-RN-6. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 6 p.

39. Maffei, H.; Stone, J. David, L.; Gregg, T.; Adams, Geils, B. 1999. Development of the understory enhancement for the Dwarf Mistletoe Spread and Intensification Model. In: Trummer, L., comp. Proc. 46^th Western International Forest Disease Work Conference. 1998 September 28–October 2; Reno, NV. U.S. Department of Agriculture, Forest Service, State and Private Forestry: 37–46.

38. Mathiasen, R.L.; Parks, C.G.; Geils, B.W.; Beatty, J.S. 1998. Notes on the distribution, host range, plant size, phenology, and sex ratio of two rare dwarf mistletoes from Central America: Arceuthobium hawksworthii and A. hondurense. Phytologia. 84(2):154–164.

37. Van Arsdel, E.P.; Conklin, D.A.; Popp, J.B.; Geils, B.W. 1998. The distribution of white pine blister rust in the Sacramento Mountains of New Mexico. Proceeding of First IUFRO Rusts of Trees Working Party Conference; 1998 August 2–7; Saariselkä, Finland. Finnish Forest Research Institute, Research Papers. 712:275–283.

36. Mathiasen, R.L.; Allison, J.R.; Geils, B.W. 1998. Western dwarf mistletoe on Colorado blue spruce and Norway spruce in California. Plant Disease. 82(3):351.

35. Barney, C.W.; Hawksworth, F.G.; Geils, B.W. 1998 Hosts of Viscum album. European Journal of Forest Pathology. 28:187–208.

34. Scharpf, R.F.; Geils, B.W.; Wiens, D.; Parker, C.; Forstreuter, W. 1997. Parasitic plants. In: Hansen, E.M.; Lewis, K.J., eds. Compendium of conifer diseases. St. Paul, MN. American Phytopathological Society: 36–40.

33. Peterson, R.S.; Geils, B.W. 1997. Stem rusts. In: Hansen, E.M.; Lewis, K.J., eds. Compendium of conifer diseases. St. Paul, MN. American Phytopathological Society: 26–35.

32. Geils, B.W.; Lundquist, J.E.; Ward, J.P. Jr. 1997. Application of hierarchy theory and disturbance profiles for assessing impacts of forest insects and pathogens on wildlife and its habitat. In: Beatty, J.S., compl. Proceedings of the 44^th Western International Forest Disease Work Conference; 1996 September 16–20; Hood River, OR. Sandy OR: U.S. Department of Agriculture, Forest Service, Westside Forest Insects and Diseases Technical Center: 81–87.

31. Dahms, C.W.; Geils, B.W., tech. eds. 1997. An assessment of forest ecosystem health in the Southwest. General Technical Report RM–GTR–295. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 97 p.

30. Moir, W.H.; Geils, B.; Benoit, M.A.; Scurlock, D. 1997. Ecology of southwestern ponderosa pine forests. In: Block, W.M.; Finch, D.M., tech. eds. Songbird ecology in southwestern ponderosa pine forests: a literature review. General Technical Report. RM–GTR–292. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station: 3–27.

29. Vogler, D.R.; Cobb. F.W, Jr.; Geils, B.W.; Nelson, D.L. 1996. Isozyme diversity among hard pine stem rusts fungi in the western United States. Canadian Journal of Botany. 74:1058–1070.

28. Hawksworth, F.G.; Wiens, D. 1996. Dwarf mistletoes: Biology, pathology, and systematics. Geils, B.W. tech. ed. Nisley, R.G. man. ed. Agriculture Handbook 450. Washington, DC: U.S. Department of Agriculture, Forest Service. 410 p.

27. Geils, B.W. 1995. Changes in taxonomy, hosts, and distribution of Arceuthobium. In: Mathiasen, R.L., compl. Proceedings of the 43^rd Western International Forest Disease Work Conference; 1995 August 29–September 1; Whitefish, MT. Coeur d'Alene, ID: Idaho Department of Lands: 68–73.

26. Beatty, J.S.; Lundquist, J.E.; Geils, B.W. 1995. Disturbance and canopy gaps as indicators of forest health in the Blue Mountains of Oregon. Eskew, L.G., compl. Forest health through silviculture; Proceedings 1995 National Silviculture Workshop; 1995 May 8–11; Mescalero, NM. General Technical Report RM–GTR–267. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station: 74–78.

25. Geils, B.W.; Lundquist, J.L.; Negron, J.F.; Beatty, J.S. 1995. Disturbance regimes and their relationships to forest health. In: Eskew, L.G., compl. Forest health through silviculture; Proceedings 1995 National Silviculture Workshop; 1995 May 8–11; Mescalero, NM. General Technical Report RM–GTR–267. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station: 67–72.

24. Mathiasen, R.L.; Geils, B.W.; Carlson, C.E.; Hawksworth, F.G. 1995. Larch mistletoe not found on alpine larch. Research Note RM–533. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 4 p.

23. Lundquist, J.E.; Geils, B.W.; Negron, J.F. 1995. Integrating applications for understanding the effects of small-scale disturbances in forest ecosystems. Thompson, J.E., compl. Proceedings of a Workshop: Analysis in support of ecosystem management, analysis workshop III; 1995 April 10–13; Fort Collins, CO. Washington, DC: U.S. Department Agriculture, Forest Service, Ecosystem Management Analysis Center: 77–86.

22. Hawksworth, F.G.; Williams-Cipriani, J.C.; Eav, B.B.; Geils, B.G. (sic); Johnson, R.R.; Marsden, M.A.; Beatty, J.S.; Schubert, G.D.; Robinson, D.C.E, 1995. Dwarf mistletoe impact modeling system: Users guide and reference manual. Report MAG–95–2. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Forest Pest Management, Methods Application Group. 120 p.

21. Geils, B.W. 1993. An outline for proposed research and cooperative studies on blister rut of southwestern white pine. In: Allison, J.R., compl. Proceedings of the 41^st Western International Forest Disease Work Conference; 1993 September 13–17; Boise, ID. San Bernardino, CA: U.S. Department of Agriculture, Forest Service, San Bernardino National Forest: 103–111.

20. Jacobi, W.R.; Geils, B.W.; Taylor, J.E.; Zentz, W.R. 1993. Predicting the incidence of Comandra blister rust on lodgepole pine: Site, stand, and alternate–host influences. Phytopathology. 83:630–637.

19. Geils, B.W.; Jacobi, W.R. 1993. Effects of Comandra blister rust on growth and survival of lodgepole pine. Phytopathology. 83:638–644.

18. Hawksworth, F.G.; Pundir, Y.P.S.; Shaw, C.G., III; Geils, B.W. 1993. The host range of Dendrophthoe fulcata (L. f.) Ettingsh. (Loranthaceae). Indian Journal of Forestry. 16(3):263–281.

17. Reich, R.M.; Geils, B.W. 1993. Review of spatial analysis techniques. In: Liebhold, A.M.; Barrett, H.R., eds. Proceedings of a workshop: Spatial Analysis and Forest Pest Management; 1992 April 27–30; Mountain Lakes VA. General Technical Report NE–175. Morgantown, WV: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station: 142–149.

16. Geils, B.W. 1992. Analyzing landscape patterns caused by forest pathogens: a review of the literature. In: Frankle, S., compl. Proceedings of the 40^th Western International Forest Disease Work Conference; 1992 July 13–17; Durango, CO: San Francisco, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Region: 21–32.

15. Lundquist, J.E.; Geils, B.W.; Johnson, D.W. 1992. White pine blister rust on limber pine in South Dakota. Plant Disease. 76:538.

14. Hawksworth, F.G.; Williams-Cipriani, J.C.; Eav, B.B.; Geils, B.W.; Johnson, R.R.; Marsden, M.A.; Beatty, J.S.; Schubert, G.D.; Robinson, D.C.E, 1992. Interim dwarf mistletoe impact modeling system: Users guide and reference manual. Report MAG–91–3. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Forest Pest Management, Methods Application Group. 90 p.

13. Geils, B.W.; Jacobi, W.R. 1991. Rating a lodgepole pine forest for potential losses to Comandra blister rust. In: Hiratsuka, Y.; Samoil, J.K.; Blenis, P.V.; Crane, P.E.; Laishely, B.L., eds. 1991 Rusts of Pine. Proceedings of the 3^rd IUFRO Rust of Pine Working Party Conference; 1989 September 18–22; Banff, AB. Information Report NOR–X–317. Edmonton, AB: Forestry Canada, Northwest Region and Northern Forestry Centre: 403–408.

12. Geils, B.W.; Mathiasen, R.L. 1990. Intensification of dwarf mistletoe on southwestern Douglas–fir. Forest Science. 36:955–969.

11. Geils, B.W.; Jacobi, W.R. 1990. Development of Comandra blister rust on lodgepole pine. Canadian Journal Forest Research. 20:159–165.

10. Hawksworth, F.G.; Geils, B.W. 1990. How long do mistletoe–infected ponderosa pines live? Western Journal of Applied Forestry. 5(2):47–48.

9. Hawksworth, F.G.; Johnson, D.W.; Geils, B.W. 1987. Sanitation thinning in young dwarf mistletoe–infested lodgepole pine. In: Troendle, C.A.; Kaufmann, M.R.; Hamre, R.H.; Winokur, R.P., tech. coords. Management of subalpine forests: Building on 50 years of research; 1987 July 6–9; Silver Creek, CO. General Technical Report RM–149. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station: 218–219.

8. Geils, B.W.; Jacobi, R.W. 1987. Commandra (sic) blister rust: a threat to lodgepole pine. In: Troendle, C.A.; Kaufmann, M.R.; Hamre, R.H.; Winokur, R.P., tech. coords. Management of subalpine forests: Building on 50 years of research; 1987 July 6–9; Silver Creek, CO. General Technical Report RM–149. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station: 216–217.

7. Geils, B.W. 1986. Status and direction of studies on Comandra blister rust in the Rocky Mountains. In: Cooley, S.J., compl. Proceedings of the 34^th Western International Forest Disease Work Conference; 1986 September 9–12; Juneau, AK. Portland, OR: U.S. Department of Agriculture, Forest Service, Forest Pest Management: 24–26.

6. Hawksworth, F.G.; Geils, B.W. 1985. Vertical spread of dwarf mistletoe in thinned ponderosa pine in Arizona. Research Note RM–460. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 3 p.

5. Hawksworth, F.G.; Geils, B.W.; Coppola, J. 1985. Biological evaluation of tree diseases in the Henry Mountains, Richfield District, BLM, Utah. Report R–4–85–11. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Region. 3 p.

4. Geils, B.W. 1984. Comandra blister rust damage and development in lodgepole pine. Fort Collins, CO: Colorado State University. Ph.D. Dissertation. 82 p.

3. Geils, B.W. 1984. Effects of comandra blister rust on growth and survival of lodgepole pine. In: Hunt, R.S., compl. Proceedings of the 32^nd Western International Forest Disease Work Conference; 1984 September 25–28; Taos, NM. Victoria, BC: Forestry Canada, Pacific Forestry Centre: 24–25.

2. Geils, B.W.; Jacobi, W.R. 1984. Incidence and severity of Comandra blister rust on lodgepole pine in northwestern Wyoming. Plant Disease. 68:1049–1051.

1. Geils, B.W. 1981. Comandra blister rust of lodgepole pine in the Rocky Mountain Region. In: Shaw, C.G., III, compl. Proceedings of the 29^th Western International Forest Disease Work Conference; 1981 September 15–18; Vernon, BC. Juneau, AK: U.S. Department of Agriculture, Forest Service, Alaska Region: 91–92.