| Name | Gruber, Calvin Luther |
| Date of birth | 1864 |
| Remarks | [author note: Herbarium and types: A, NY] [collector note: Pennsylvania. A, CM, NY] |
| ASA Botanist ID | 100849 botanist |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/88c2c3a2-c4a4-4cd8-821c-f489db221cee |
| Variant name | Calvin Luther Gruber |
| Author name | Gruber |
| B & P Author Abbrev. | Gruber |
| Standard/Label Name | C. L. Gruber |
| Full Name | Gruber, Calvin Luther |
| Geography Author | United States of America |
| Geography Collector | United States of America |
| Specialty Author | Pteridophytes |
| Specialty Collector | Phanerogams |
| Citation as Author | Authors of Plant Names. Royal Botanic Gardens, Kew |
| Citation as Collector | Index Herbariorum - Collectors E-H |
| Author in | Hawthorns Berks County |
| Author in | Crataegus Berks County |
| Holdings | Search for specimens collected by C. L. Gruber |
| Collections in | [no date] (12), 1901 (1), 1902 (1), 1903 (20), 1904 (33), 1905 (230), 1906 (58), 1907 (7), 1908 (9), 1909 (3), 1910 (1), 1916 (1), 1936 (1) |