| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Orobanchaceae | Agalinis | Agalinis, Purple-foxglove |  | ||
| Orobanchaceae | Aphyllon | Cancer-root |  | ||
| Orobanchaceae | Aureolaria | Oak-leech, False-foxglove |  | ||
| Orobanchaceae | Bellardia | Lineseed |  | ||
| Orobanchaceae | Buchnera | Bluehearts |  | ||
| Orobanchaceae | Castilleja | Paintbrush |  | ||
| Orobanchaceae | Conopholis | Bearcorn |  | ||
| Orobanchaceae | Dasistoma | Mullein Foxglove |  | ||
| Orobanchaceae | Epifagus | Beechdrops |  | ||
| Orobanchaceae | Euphrasia | Eyebright |  | ||
| Orobanchaceae | Macranthera | Flameflower |  | ||
| Orobanchaceae | Melampyrum | Cow-wheat |  | ||
| Orobanchaceae | Myzorrhiza | American Broomrape |  | ||
| Orobanchaceae | Odontites |  | |||
| Orobanchaceae | Orobanche | Cancer-root, Broomrape, Vetch-strangler |  | ||
| Orobanchaceae | Orthocarpus | Owl's-clover |  | ||
| Orobanchaceae | Pedicularis | Wood-betony, Lousewort |  | ||
| Orobanchaceae | Phelipanche | Branched Broomrape |  | ||
| Orobanchaceae | Schwalbea | Chaffseed |  | ||
| Orobanchaceae | Seymeria | Seymeria, Blacksenna |  | ||
| Orobanchaceae | Striga | Witchweed |  |