Plant Collecting Expeditions |
- 2019; Dorsche, Townsend, & Hummer; Wild Hops (Colorado)
- 2019; Lyrene & Hummer; Native Vaccinium (Florida)
- 2018; Ballington, Lyrene, Hummer, & Bushakra; Berry Crops (Virginia & W. Virginia)
- 2016; Hummer, Dossett; Berry Crops (Southern Quebec, Canada)
- 2012; Hummer, Vaccinium and Related Ericaceae (Nova Scotia, Canada)
- 2011; Barney & Holloway; Native Small Fruits (Alaska)
- 2011; Hummer, Jamieson, Richards, & Newell; Vaccinium (Canada)
- 2009; Hummer, Postman, Iketani, & Imaneshi; Temperate Fruits (Japan)
- 2007; Hummer, Finn, & Dossett; Berry Crops (South East & Mid-West USA)
- 2006; Postman & Stover; Temperate Fruits & Nuts (Georgia & Armenia)
- 2004; Hummer, Davis, Iketani, & Imanishi; Temperate Fruit Crops (Japan)
- 2003; Hummer & Sabitov, Small Fruit (Iturup & Sakhalin Island)
- 2002; Hummer, Oliphant, Cook, Jackson, & Dorsch; Wild Hops (New Mexico & Colorado)
- 2001; Hummer, Vorsa, Sabitov, Cherbukin, & Funtova; Fruit & Nuts (Russia)
- 1999; Hampton; Humulus Collection; (North Dakota, Saskatchewan, and Manitoba)
- 1996; Hummer & Wright; Small Fruit (Alaska)
- 1996; Thompson, Postman, & Finn; Rubus, Vaccinium, Ribes & Fragaria (China)
- 1995; Forsline, Luby, & Dickson; Wild Apples (Kazakhstan)
- 1994; McGranahan, Leslie, & Thompson; Walnuts (Kyrgyzstan)
- 1993; Forsline, Mink, Dickson, & Noiton; Fruit Crops (Kazakhstan & Kyrgyzstan)
- 1992; Thompson; Rubus Germplasm (China)
- 1990; Ballington, Luteyn, & Thompson; Small Fruits (Ecuador)
- 1990; Hummer; Cranberry (New England)
- 1988; Thompson & Brenner; Temperate Fruits & Nuts (Pakistan)
- 1986; Ballington, Payne; Collection Summary (Western North Carolina)
- 1985; Ballington, Luby, & Jahn; Small Fruit (Pacific Northwest, USA)
- 1983; Westwood; Rubus, Vaccinium, & Fragaria (Hawaii)
- 1982; Westwood; Pomology & Germplasm (China)
- 1980-1982; Ballington, Kirkman, & Gensel; Vaccinium (USA)
- 1981; Westwood; Rubus, Corylus, Pyrus, & Ribes (East Asia)
- 1978-1979; Ballington, Kirkman, & Barkley; Vaccinium (North & South Carolina)
- 1977; Dewey & Plummer; Grasses, Legumes, Forbs, & Shrubs (Russia)
- 1956-1957; Darrow; Fragaria Collection Summary (Chile, Ecuador, and Colombia)
- 1956-1957; Darrow; Fragaria Collection Summary 2 (Chile, Ecuador, and Colombia)
- 1919; Reimer; Oriental Pears (Asia)