| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Rhamnaceae | Endotropis alnifolia | Alder-leaved Buckthorn, American Alder-Buckthorn | Northern forests, mafic or calcareous (dolomitic) seeps, usually with Parnassia grandifolia. | NL (Newfoundland) west to BC, south to NJ, PA, w. MD (Knapp et al. 2011), sw. VA, ne. TN (Chester, Wofford, & Kral 1997), OH, n. IN, n. IL, IA, and CA. |  |
| Rhamnaceae | Endotropis lanceolata | Lance-leaved Buckthorn | Dry to moist thickets and woodlands over calcareous rocks, bottomland hardwood forests. | PA west to WI and SD, south to AL and TX. |  |
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