| Croton dioicus Cav. | S. Hayes s.n. | United States of America. Texas. | | 3963773 |  |
| Croton dioicus Cav. | S. Hayes s.n. | United States of America. Texas. Rio Colorado. | | 3963789 |  |
| Croton dioicus Cav. | A. C. V. Schott s.n. | United States of America. Texas. near the Pecos, western Texas. | | 3963756 |  |
| Croton dioicus Cav. | S. B. Buckley s.n. | United States of America. Texas. S.W. Texas. | | 3963783 |  |
| Croton dioicus Cav. | E. O. Wooton 92 | United States of America. New Mexico. Doña Ana Co. On the mesa near Las Cruces. | | 3963790 |  |
| Croton dioicus Cav. | B. C. Tharp 4367O | United States of America. Texas. Pecos Co. | | 3963752 |  |
| Croton dioicus Cav. | B. C. Tharp 49-1178 | United States of America. Texas. Culberson Co. Valley north of highway. | | 3963734 |  |
| Croton dioicus Cav. | B. C. Tharp 49-1178 | United States of America. Texas. Culberson Co. Valley north of highway. | | 3963747 |  |
| Croton dioicus Cav. | J. S. Henrickson 6563 | Mexico. Nuevo León. 23 miles NE of Dr. Arroyo, 14.9 miles SW of La Escondida along Hwy 29. | | 3974689 |  |
| Croton dioicus Cav. | E. O. Wooton s.n. | United States of America. New Mexico. Mesa near Las Cruces. | | 3963749 |  |
| Croton dioicus Cav. | D. Ward 81-321 | Mexico. Chihuahua. 2 mi. NE of Samalayuca and 1 mi. E of Mex. Hwy 45, on the S edge of the Samalayuca Sand Dunes. | | 3974696 |  |
| Croton dioicus Cav. | R. Corral Diaz 195 | Mexico. Durango. Santiago Papasquiaro Mun. 3.5 km al Oeste de La Soledad, 11 km NW Santiago Papasquiaro. | | 3974695 |  |
| Croton dioicus Cav. | F. Ventura A. 1592 | Mexico. Puebla. Tepeyahualco Mun. Alchichica, cerca de la laguna. | | 3974686 |  |
| Croton dioicus Cav. | V. W. Steinmann 2481 | Mexico. Puebla. Guadalupe Victoria Mun. along MEX 140, ca. 2 km northeast of the road to Guadalupe Victoria. | | 3974691 |  |
| Croton dioicus Cav. | V. W. Steinmann 2481 | Mexico. Puebla. Guadalupe Victoria Mun. along MEX 140, ca. 2 km northeast of the road to Guadalupe Victoria. | | 3974692 |  |
| Croton dioicus Cav. | P. Carrillo-Reyes 5226 | Mexico. Puebla. Guadalupe Victoria Mun. Ladera NE del crater de la Laguna de Atexcac. 1.1 km (en linea recta) al SSE de San Luis Atexcac. | | 3974678 |  |
| Croton dioicus Cav. | D. Seigler DS9268 | Mexico. Coahuila. Saltillo Mun. Paso de Carneros. | | 3974682 |  |
| Croton dioicus Cav. | V. W. Steinmann 777 | Mexico. Puebla. San José Chiapa Mun. along Highway 129, 11 km (by road) southwest of Tequixuitla. | | 3974693 |  |
| Croton dioicus Cav. | M. H. Nee 33044 | Mexico. Puebla. 3 km E of center of San Nicolas Buenos Aires. | | 3974699 |  |
| Croton dioicus Cav. | M. H. Nee 29567 | Mexico. Puebla. Tepeyahualco Mun. Laguna El Salado, along dirt road 7 km W of hwy. Mex 140, 9 km NW of Laguna de Alchichica. | | 3974681 |  |
| Croton dioicus Cav. | | | | 3974671 |  |
| Croton dioicus Cav. | | | | 3974672 |  |
| Croton dioicus Cav. | D. B. Dunn 16123 | United States of America. Texas. Pecos Co. 13 miles west of Bakersfield. | | 3963742 |  |
| Croton dioicus Cav. | D. B. Dunn 23175 | Mexico. Coahuila. along road to E of Hwy 57, 18 miles SE of Saltillo. | | 3974679 |  |
| Croton dioicus Cav. | D. S. Seigler DS8544 | United States of America. Texas. Pecos Co. 2.5 miles east of Intersection 349 and 29. | | 3963716 |  |
| Croton dioicus Cav. | D. S. Seigler DS9115 | United States of America. Texas. El Paso Co. El Paso. 3 miles east of the El Paso airport. | | 3963711 |  |
| Croton dioicus Cav. | F. S. Earle 45 | United States of America. Texas. Ward Co. Barstow. | | 3963774 |  |
| Croton dioicus Cav. | F. S. Earle 63 | United States of America. Texas. Ward Co. Barstow. | | 3963777 |  |
| Croton dioicus Cav. | F. S. Earle 173 | United States of America. Texas. Jeff Davis Co. Foothills Davis Mts. | | 3963780 |  |
| Croton dioicus Cav. | F. S. Earle 380 | United States of America. Texas. Culberson Co. Railroad near Kent. | | 3963788 |  |
| Croton dioicus Cav. | F. S. Earle 624 | United States of America. Texas. Ward Co. Barstow. | | 3963708 |  |
| Croton dioicus Cav. | F. S. Earle 624 | United States of America. Texas. Ward Co. Barstow. | | 3963775 |  |
| Croton dioicus Cav. | F. S. Earle 312 | United States of America. New Mexico. Chaves Co. 20 mi South of Roswell. | | 3963776 |  |
| Croton dioicus Cav. | F. S. Earle 437 | United States of America. Texas. Devil's River. | | 3963779 |  |
| Croton dioicus Cav. | C. L. Lundell 12443 | United States of America. Texas. Zapata Co. 19 mi. from Laredo, along Laredo-Brownsville road. | | 3963713 |  |
| Croton dioicus Cav. | R. M. King 2638 | Mexico. Puebla. Along route 150, about 24 miles southeast of Puebla. | | 3974680 |  |
| Croton dioicus Cav. | M. Taylor 137 | Mexico. Nuevo León. Galeana Mun. Hacienda Pablillo. | | 3974677 |  |
| Croton dioicus Cav. | C. H. Müller s.n. | United States of America. Texas. Brewster Co. Chisos Mts. | | 3963744 |  |
| Croton dioicus Cav. | | | | 3963792 |  |
| Croton dioicus Cav. | H. E. Seaton 269 | Mexico. Mt. Orizaba. | | 3974670 |  |