| Name | Johnston, Marshall Conring & Graham, J. |
| Agent type | Team/Group |
| First date collected | 1959 |
| Remarks | [collector note: TEX] |
| ASA Botanist ID | 158797 botanist |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/c91c6f83-a06c-46d8-aad8-b40823e1a650 |
| Standard/Label Name | M. C. Johnston & J. Graham |
| Full Name | Johnston, Marshall Conring & Graham, J. |
| Geography Collector | Mexico, United States of America |
| Specialty Collector | Phanerogams |
| Citation as Collector | Phytologia 79: 87. 1996 ("1995") |
| Team Members: | Johnston, Marshall Conring Graham, J. |