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CCDB → Angiosperms → Compositae → Grindelia → Grindelia procera Greene
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Grindelia procera Greene | Grindelia hirsutula Hook. & Arn. | 6 | IPCN online | Dunford, M. 1986. Chromosome relationships of diploid species of Grindelia (Compositae) from Colorado, New Mexico and adjacent areas. Amer. J. Bot. 73: 297–303. | |||
| Grindelia procera Greene | Grindelia hirsutula Hook. & Arn. | 10II+1IV | IPCN online | Keil, D. J., M. A. Luckow & D. J. Pinkava. 1988. Chromosome studies in Asteraceae from the United States, Mexico, the West Indies, and South America. Amer. J. Bot. 75: 652–668. | |||
| ! | Grindelia procera Greene | Grindelia hirsutula Hook. & Arn. | 6 | 12 | IPCN67-71 | WHITAKER, T.W . & J.A. STEYERMARK. 1935. Cytological aspects of Grindelia species. Bull. Torrey Bot. Club 62: 69-73. | |
| Grindelia procera Greene | Grindelia hirsutula Hook. & Arn. | 6 | IPCN67-71 | DUNFORD, M.P. 1970. Interchange heterozygosity in diploid interspecific hybrids in Grindelia (Compositae). Amer. J. Bot. 57: 623-628. | |||
| Grindelia procera Greene | Grindelia hirsutula Hook. & Arn. | 12 | Fedorov, 1974 | Whitaker, Steyermark 1935 | |||
| Grindelia procera Greene | Grindelia hirsutula Hook. & Arn. | 12 | Fedorov, 1974 | Dunford 1964 |