| Polemoniaceae | |
Microsteris andicola
| (Wedd.) Greene | Pittonia 3(18D): 303 | 1898 |
| Polemoniaceae | |
Microsteris californica
| Greene | Pittonia 3(18D): 302–303 | 1898 |
| Polemoniaceae | |
Microsteris glabella
| Greene | Pittonia 3(18D): 301–302 | 1898 |
| Polemoniaceae | |
Microsteris gracilis
| (Hook.) Greene | Pittonia 3(18D): 300 | 1898 |
| Polemoniaceae | |
Microsteris humilis
| Greene | Pittonia 3(18D): 301 | 1898 |
| Polemoniaceae | |
Microsteris macdougalii
| A. Heller | Bull. Torrey Bot. Club 26(12): 621 | 1899 |
| Polemoniaceae | |
Microsteris micrantha
| (Kellogg) Greene | Pittonia 3(18D): 303 | 1898 |
| Polemoniaceae | |
Microsteris stricta
| Greene | Pittonia 3(18D): 302 | 1898 |