| Name | Williams, Ion James Muirhead |
| Date of birth | 1912 |
| Remarks | [author note: Herbarium and types: BOL. Proteaceae-Leucadendron; Rutaceae - Diosma and allies] [collector note: BOL, NBG, PRE, STE] |
| ASA Botanist ID | 145146 botanist |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/1fc0be9b-21f5-4303-b174-6f2608dd6e04 |
| Variant name | Ion James Muirhead Williams |
| Author name | I. Williams |
| B & P Author Abbrev. | I. Williams |
| Standard/Label Name | I. J. M. Williams |
| Full Name | Williams, Ion James Muirhead |
| Geography Author | South Africa |
| Geography Collector | South Africa |
| Specialty Author | Spermatophytes |
| Citation as Author | Authors of Plant Names. Royal Botanic Gardens, Kew |
| Citation as Author | Index Herbariorum. Part 1: The Herbaria of the World. Eighth Edition. Bronx, NY |
| Citation as Collector | Index Herbariorum - Collectors T-Z |
| Citation as Collector | Gunn & Codd. 1981. Bot. Explor. S. Africa |