| Crocion nuttallii (Pursh) Nieuwl. & Lunell | Viola nuttallii Pursh sect. Viola |
| Crocion pubescens (Aiton) Nieuwl. | Viola pubescens Aiton sect. Viola |
| Crocion vallicola (A.Nelson) Nieuwl. & Lunell | Viola vallicola A.Nelson |
| Crocion nuttallii (Pursh) Nieuwl. & Lunell | Viola nuttallii Pursh sect. Viola |
| Crocion pubescens (Aiton) Nieuwl. | Viola pubescens Aiton sect. Viola |
| Crocion vallicola (A.Nelson) Nieuwl. & Lunell | Viola vallicola A.Nelson |