| Micropus californicus var. californicus Fisch. & C.A. Mey., 1835 |
| Microseridinae Stebbins, 1953 |
| Microseris D. Don, 1832 |
| Microseris douglasii Sch. Bip., 1866 |
| Microseris elegans Greene ex A. Gray, 1884 |
| Microseris heterocarpa (Nutt.) K.L. Chambers, 1955 |
| Microseris lindleyi (DC.) A. Gray, 1883 |
| Microseris linearifolia (Nutt.) Sch. Bip., 1866 |
| Microspermum Lag., 1816 |
| Microspermum debile Benth., 1840 |
| Microspermum debile var. arsenei Rzed., 1970 |
| Microspermum debile var. debile Benth., 1840 |
| Microspermum flaccidum Paul G. Wilson, 1958 |
| Microspermum gonzalezii Rzed., 1972 |
| Microspermum gracillimum Rzed., 1972 |
| Microspermum hintonii Rzed., 1970 |
| Microspermum michoacanum (R.M. King) B.L. Turner, 1987 |
| Microspermum nummulariifolium Lag., 1816 |
| Microspermum tenue Paul G. Wilson, 1958 |
| Mieria La Llave & Lex., 1825 |