| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Boletus fibrillosus Thiers | H. E. Bigelow 2111 21 Sep 1954 | United States of America. Washington. Pierce Co. Lower Tahoma Creek, Mt. Rainier National Park. | 36612 | ||
| Boletus fibrillosus Thiers | H. E. Bigelow 17028 11 Dec 1971 | United States of America. California. Mendocino Co. Jackson State Forest. | 36613 | ||
| Boletus fibrillosus Thiers | P. Yurky F115 10 Dec 1988 | United States of America. California. Mendocino Co. Jackson State Forest, state rd 409 ca 1.0 mile N of junction with Little Lake Rd (408). | 65191 | ||
| Boletus fibrillosus Thiers | H. D. Thiers 25 Oct 1986 | United States of America. California. Mendocino Co. Jackson State Forest. | 36609 | ||
| Boletus fibrillosus Thiers | R. E. Halling 6992 25 Nov 1992 | United States of America. California. Mendocino Co. Jackson State Forest, junction Highway 408 & 409. | 36610 | ||
| Boletus fibrillosus Thiers | R. E. Halling 5635 01 Dec 1987 | United States of America. California. Mendocino Co. Junction Highway 409 & 408, Jackson State Forest. | 36608 | ||
| Boletus fibrillosus Thiers | R. E. Halling 6955 21 Nov 1992 | United States of America. California. Mendocino Co. Jackson State Forest, Highway 409. | 36611 |  | |
| Boletus fibrillosus Thiers | R. E. Halling 8728 with Largent, 19 Nov 2005 | United States of America. California. Humboldt Co. Humboldt Mycol. Soc. Show. | 00720701 | ||
| Boletus fibrillosus Thiers | H. D. Thiers HDT8907 18 Nov 1961 | United States of America. California. Mendocino Co. Jackson State Forest. | isotype | 65172 |  |
