| Asteraceae | |
Machaeranthera canescens var. alpina
| Porter | U.S. Dept. Int. Misc. Rep. 4: 59 | 1874 |
| Asteraceae | |
Machaeranthera canescens var. ambigua
| B.L. Turner | Phytologia 60(1): 77–78 | 1986 |
| Asteraceae | |
Machaeranthera canescens var. aristata
| (Eastw.) B.L. Turner | Phytologia 60(1): 78 | 1986 |
| Asteraceae | |
Machaeranthera canescens subsp. canescens
| | | |
| Asteraceae | |
Machaeranthera canescens var. canescens
| | | |
| Asteraceae | |
Machaeranthera canescens var. commixta
| (Greene) S.L. Welsh | Great Basin Naturalist 43(2): 316 | 1983 |
| Asteraceae | |
Machaeranthera canescens subsp. glabra
| (A. Gray) B.L. Turner | Phytologia 62(3): 239 | 1987 |
| Asteraceae | |
Machaeranthera canescens var. glabra
| A. Gray | Smithsonian Contr. Knowl. 3(5): 89 | 1852 |
| Asteraceae | |
Machaeranthera canescens var. incana
| (Lindl.) A. Gray | U.S. Expl. Exped., Phan. 17(2): 340 | 1874 |
| Asteraceae | * |
Machaeranthera canescens var. latifolia
| (A. Nelson) S.L. Welsh | Great Basin Naturalist Mem. 9: 213 | 1987 |
| Asteraceae | |
Machaeranthera canescens var. latifolia
| A. Gray | Smithsonian Contr. Knowl. 5(6): 337 | 1853 |
| Asteraceae | |
Machaeranthera canescens var. leucanthemifolia
| (Greene) S.L. Welsh | Great Basin Naturalist 43(2): 316 | 1983 |
| Asteraceae | |
Machaeranthera canescens var. monticola
| Dorn | Vasc. Pl. Wyoming 295 | 1988 |
| Asteraceae | |
Machaeranthera canescens var. nebraskana
| B.L. Turner | Phytologia 60(1): 78 | 1986 |
| Asteraceae | |
Machaeranthera canescens var. sessiliflora
| (Nutt.) B.L. Turner | Phytologia 60(1): 78 | 1986 |
| Asteraceae | |
Machaeranthera canescens var. shastensis
| (A. Gray) B.L. Turner | Phytologia 60(1): 79 | 1986 |
| Asteraceae | |
Machaeranthera canescens var. tephrodes
| A. Gray | | |
| Asteraceae | |
Machaeranthera canescens var. vacans
| (A. Nelson) S.L. Welsh | Great Basin Naturalist 43(2): 316 | 1983 |
| Asteraceae | |
Machaeranthera canescens var. viridis
| A. Gray | Syn. Fl. N. Amer. (ed. 2) 1: 206 | 1884 |
| Asteraceae | |
Machaeranthera canescens subsp. viscosa
| (Nutt.) Piper | Contr. U.S. Natl. Herb. 11: 575 | 1906 |
| Asteraceae | |
Machaeranthera canescens subsp. ziegleri
| Munz | Aliso 7(1): 65–66 | 1969 |
| Asteraceae | |
Machaeranthera canescens var. ziegleri
| (Munz) B.L. Turner | Phytologia 60(1): 79 | 1986 |