Machaeranthera gracilis (Nutt.) Shinners
| Taxonomic study of Machaeranthera section Machaeranthera and Hesperastrum (Asteraceae) B L Turner (1987) Phytologia 62: 207-266 | |
| Host plants of Neaspilota in California (Diptera: Tephritidae) R D Goeden (1989) Proc. Ent. Soc. Wash 91: 164-168 | |
| A conspectus of Machaeranthera (Asteraceae: Astereae) R L Hartman (1990) Phytologia 68: 439-465 | |
| Vascular flora of Buenos Aires National Wildlife Refuge (including Arivaca Cienega), Pima County, Arizona S P Mclaughlin (1992) Phytologia 73: 353-377 | |
| Syntomopus Walker: the Nearctic species with a review of known host associations (Hymenoptera: Pteromalidae) Steven L Heydon (1993) Journal of Hymenoptera Research 2: 107-116 |