| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Dioscorea densiflora Hemsl. | R. L. Walls RW18 10 Aug 2005 | Mexico. Yucatán. Chichen Itza ruins. | |||
| Dioscorea gaumeri R.Knuth | R. L. Walls RW19 10 Aug 2005 | Mexico. Yucatán. Chichen Itza ruins. | 03231198 |  | |
| Dioscorea spiculiflora Hemsl. | R. L. Walls RW20 11 Aug 2005 | Mexico. Yucatán. Highway 261, between km 174 and 173, west side of road, just before curve. | 03231292 |  | |
| Dioscorea spiculiflora Hemsl. | R. L. Walls RW21 11 Aug 2005 | Mexico. Yucatán. 500m west on dirt road that turns off highway 261 at km163. | 03231294 |  | |
| Dioscorea gaumeri R.Knuth | R. L. Walls RW22 11 Aug 2005 | Mexico. Yucatán. 500m west on dirt road that turns off highway 261 at km163. | 03231197 |  | |
| Dioscorea spiculiflora Hemsl. | R. L. Walls RW24 11 Aug 2005 | Mexico. Yucatán. 500m west on dirt road that turns off highway 261 just south of experimental farm. | |||
| Dioscorea polygonoides Humb. & Bonpl. ex Willd. | R. L. Walls RW26 11 Aug 2005 | Mexico. Yucatán. 0.6 km from turn off of highway 261 on road to Dzibilchactum. | |||
| Dioscorea floribunda M.Martens & Galeotti | R. L. Walls RW27 11 Aug 2005 | Mexico. Yucatán. 0.6 km from turn off of highway 261 on road to Dzibilchactum. | |||
| Dioscorea polygonoides Humb. & Bonpl. ex Willd. | R. L. Walls RW28 11 Aug 2005 | Mexico. Yucatán. ~1 km from turn off of highway 261 on road to Dzibilchactum. | 03231238 |  | |
| Dioscorea floribunda M.Martens & Galeotti | R. L. Walls RW29 11 Aug 2005 | Mexico. Yucatán. Turn off of highway 261 on road to Dzibilchactum 1km before entrance to Un. de Mayak. | |||
| Dioscorea spiculiflora Hemsl. | R. L. Walls RW30 11 Aug 2005 | Mexico. Yucatán. 1km past entrance to Dzibilchactum. | 03231293 |  | |
| Dioscorea composita Hemsl. | R. L. Walls RW31 22 Aug 2005 | Mexico. Oaxaca. Municipality of Tierra Negra - Chiltepec. Near Tuxtapec, off highway 175. | 03231152 |  | |
| Dioscorea composita Hemsl. | R. L. Walls RW32 22 Aug 2005 | Mexico. Oaxaca. Municipality of Tierra Negra - Chiltepec. Near Tuxtapec, off highway 175. | 03231151 |  | |
| Dioscorea densiflora Hemsl. | R. L. Walls RW34 22 Aug 2005 | Mexico. Oaxaca. Municipality of Tierra Negra - Chiltepec. Near Tuxtapec, off highway 175. | 03231164 |  | |
| Dioscorea bartlettii C.V.Morton | R. L. Walls RW35 22 Aug 2005 | Mexico. Oaxaca. Municipality of Tierra Negra - Chiltepec. Near Tuxtapec, off highway 176. | 03231157 |  | |
| Dioscorea mexicana Scheidw. | R. L. Walls RW36 22 Aug 2005 | Mexico. Oaxaca. Municipality of Tierra Negra - Chiltepec. Near Tuxtapec, off highway 177. | 03231180 |  | |
| Dioscorea subtomentosa Miranda | R. L. Walls RW37 27 Aug 2005 | Mexico. Guerrero. 1 km past Petaquillas. | 03231274 |  | |
| Dioscorea cyphocarpa B.L.Rob. | R. L. Walls RW38 27 Aug 2005 | Mexico. Guerrero. 2 km past Petaquillas. | 03231166 |  | |
| Dioscorea remotiflora Kunth | R. L. Walls RW39 27 Aug 2005 | Mexico. Guerrero. 2 km past Petaquillas. | 03231223 |  | |
| Dioscorea subtomentosa Miranda | R. L. Walls RW40 27 Aug 2005 | Mexico. Guerrero. 2 km past Petaquillas. | 03231275 |  | |
| Dioscorea guerrerensis R.Knuth | R. L. Walls RW41 27 Aug 2005 | Mexico. Guerrero. 2 km past Petaquillas. | 03231190 |  | |
| Dioscorea cyphocarpa B.L.Rob. | R. L. Walls RW42 27 Aug 2005 | Mexico. Guerrero. Entrance to Grutas de Juxtlahuaca. Together with 44. | 03231167 |  | |
| Dioscorea sparsiflora Hemsl. | R. L. Walls RW44 27 Aug 2005 | Mexico. Guerrero. Entrance to Grutas de Juxtlahuaca. | 03231224 |  | |
| Dioscorea cyphocarpa B.L.Rob. | R. L. Walls RW45 27 Aug 2005 | Mexico. Guerrero. 1 km downhill before the entrance to Grutas de Juxtlahuaca. | |||
| Dioscorea sparsiflora Hemsl. | R. L. Walls RW46 27 Aug 2005 | Mexico. Guerrero. Quechiltenango. | 03231290 |  | |
| Dioscorea convolvulacea Cham. & Schltdl. | R. L. Walls RW47 27 Aug 2005 | Mexico. Guerrero. 1 km past Petaquillas. | |||
| Dioscorea urceolata Uline | R. L. Walls RW48 28 Aug 2005 | Mexico. Morelos. | 03231231 |  | |
| Dioscorea villosa L. | R. L. Walls RW50 01 Aug 2006 | United States of America. Delaware. | |||
| Dioscorea villosa L. | R. L. Walls RW51 15 Aug 2006 | United States of America. Pennsylvania. Dunn Lane, Kelletville PA. | |||
| Dioscorea floribunda M.Martens & Galeotti | R. L. Walls RW52 30 Dec 2006 | Mexico. Yucatán. On road to Dzibilchaltun. | |||
| Dioscorea floribunda M.Martens & Galeotti | R. L. Walls RW53 30 Dec 2006 | Mexico. Yucatán. On road to Dzibilchaltun. | 03231212 |  | |
| Dioscorea floribunda M.Martens & Galeotti | R. L. Walls RW54 30 Dec 2006 | Mexico. Yucatán. On road to Dzibilchaltun. | 03231216 |  | |
| Dioscorea spiculiflora Hemsl. | R. L. Walls RW55 30 Dec 2006 | Mexico. Yucatán. On road to Dzibilchaltun. | 03231278 |  | |
| Dioscorea floribunda M.Martens & Galeotti | R. L. Walls RW56 30 Dec 2006 | Mexico. Yucatán. On road to Dzibilchaltun. | 03231207 |  | |
| Dioscorea floribunda M.Martens & Galeotti | R. L. Walls RW57 30 Dec 2006 | Mexico. Yucatán. On road to Dzibilchaltun. | 03231208 |  | |
| Dioscorea floribunda M.Martens & Galeotti | R. L. Walls RW58 30 Dec 2006 | Mexico. Yucatán. On road to Dzibilchaltun. | 03231209 |  | |
| Dioscorea spiculiflora Hemsl. | R. L. Walls RW59 30 Dec 2006 | Mexico. Yucatán. Between Chabecal and Conkal. | 03231279 |  | |
| Dioscorea spiculiflora Hemsl. | R. L. Walls RW60 30 Dec 2006 | Mexico. Yucatán. Between Chabecal and Conkal. | 03231295 |  | |
| Dioscorea spiculiflora Hemsl. | R. L. Walls RW61 31 Dec 2006 | Mexico. Yucatán. Highway 261, between km 174 and 173, west side of road, just before curve. | 03231291 |  | |
| Dioscorea spiculiflora Hemsl. | R. L. Walls RW62 31 Dec 2006 | Mexico. Yucatán. On highway to Uxmal, turn 0.8 km N of turn off to Oxkintok, west side, about 2 km down dirt road on right. | 03231280 |  |