| Name | Marr, Joanna C. W. |
| First date collected | 1948 |
| Remarks | [collector note: MIN (± complete). FH, COLO; Plants of the Marr, University of Colorado Ungava Bay Expedition, Northern Quebec, 1948 |
| ASA Botanist ID | 123782 botanist |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/dde33a50-21cc-4ea8-acf4-c8886929ebcf |
| Variant name | Marr, J. C. W. |
| Variant name | J. Marr |
| Standard/Label Name | J. C. W. Marr |
| Full Name | Marr, Joanna C. W. |
| Geography Collector | Canada |
| Specialty Collector | Bryophytes |
| Citation as Collector | Index Herbariorum - Collectors M |
| Citation as Collector | specimen (FH) Grimmia affinis Hornsch. |
| Member of teams/groups | |
| Holdings | Search for specimens collected by J. C. W. Marr |
| Collections in | 1929 (1), 1936 (1), 1938 (2), 1939 (12), 1948 (27) |
| Collector Teams: | E. C. Abbe, L. B. Abbe & J. C. W. Marr E. C. Abbe & J. C. W. Marr |