| Castilleja martini Abrams, 1902 |
| Castilleja mcvaughii N.H. Holmgren, 1976 |
| Castilleja mexicana (Hemsl.) A. Gray, 1886 |
| Castilleja minor (A. Gray) A. Gray, 1876 |
| Castilleja moranensis Kunth, 1818 |
| Castilleja nervata Eastw., 1909 |
| Castilleja nitricola Eastw., 1909 |
| Castilleja nivibractea G.L. Nesom, 1995 |
| Castilleja obovata Benth., 1846 |
| Castilleja ornata Eastw., 1909 |
| Castilleja ortegae Standl., 1936 |
| Castilleja palmeri Eastw., 1909 |
| Castilleja papilionacea G.L. Nesom, 1992 |
| Castilleja patriotica Fernald, 1904 |
| Castilleja pectinata M. Martens & Galeotti, 1845 |
| Castilleja pectinata var. purpusii (Brandegee) J.M. Egger, 2008 |
| Castilleja perelegans G.L. Nesom, 1992 |
| Castilleja porphyrosceptron G.L. Nesom, 1992 |
| Castilleja pringlei Fernald, 1905 |
| Castilleja pterocaulon N.H. Holmgren, 1976 |