| Auricled Gerardia | Agalinis | auriculata | | 15 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Sandplain Gerardia | Agalinis | decemloba | | 19 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Saltmarsh Gerardia | Agalinis | maritima var. maritima | | 34 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Blunt-lobed Gerardia | Agalinis | obtusifolia | | 38 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Purple Gerardia | Agalinis | purpurea | | 162 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Thread-leaved Gerardia | Agalinis | setacea | | 38 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Skinner's Gerardia | Agalinis | skinneriana | | 10 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Slender-leaved Gerardia | Agalinis | tenuifolia var. tenuifolia | | 9 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| One-flowered Broomrape | Aphyllon | uniflorum | | 163 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Smooth Yellow False Foxglove | Aureolaria | flava | | 20 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Entire-leaved Yellow False Foxglove | Aureolaria | laevigata | | 15 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Fern-leaved Yellow False Foxglove | Aureolaria | pedicularia | | 11 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Downy Yellow False Foxglove | Aureolaria | virginica | | 66 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| American Bluehearts | Buchnera | americana | | 22 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Scarlet Indian Paintbrush | Castilleja | coccinea | | 32 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Bear Corn | Conopholis | americana | | 434 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Beechdrops | Epifagus | virginiana | | 569 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Narrow-leaved Cow-wheat | Melampyrum | lineare | | 158 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Lesser Broomrape | Orobanche | minor | | 42 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Rosy Owl's-clover | Orthocarpus | bracteosus | | 0 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Canadian Lousewort | Pedicularis | canadensis | | 93 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Swamp Lousewort | Pedicularis | lanceolata | | 24 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |
| Chaffseed | Schwalbea | americana | | 2 | Broom-rape Family | Orobanchaceae | Lamiales | Magnoliopsida | Plantae |