Semantic search
Carex retrorsa, Carex rostrata, Carex rotundata, Carex saxatilis, Carex saximontana, Carex schweinitzii, Carex sect. Phyllostachyae, Carex sect. Squarrosae, Carex sect. Vesicariae, Carex squarrosa, Carex superata, Carex thurberi, Carex timida, Carex tuckermanii, Carex typhina, Carex utriculata, Carex vesicaria, Carex willdenowii, Coptis, Coptis aspleniifolia, Coptis laciniata, Coptis occidentalis, Coptis trifolia, Enemion, Enemion biternatum, Enemion hallii, Enemion occidentale, Enemion savilei, Enemion stipitatum, Helleborus, Helleborus viridis, Hydrastis, Hydrastis canadensis, Nigella, Nigella damascena