Family = Asteraceae
Subfamily = Asteradeae
Supergenus = Heliantheae
Genus = Rudbeckia

Included Species =
R. alpicola
R. auriculata
R. californica
R. columnifera (see Ratibida columnifera)
R. deamii (syn. R. fulgida var. deamii)
R. fulgida (Black-eyed Susan)
R. glaucescens
R. gloriosa (syn. R. hirta)
R. graminifolia
R. grandiflora
R. heliopsidis
R. hirta
R. klamathensis
R. laciniata (Cutleaf Coneflower)
R. maxima
R. missouriensis
R. mohrii
R. mollis
R. newmanii (syn. R. fulgida var. speciosa)
R. nitida (Shining Coneflower)
R. occidentalis
R. purpurea (correctly known as: Echinacea purpurea)
R. scabrifolia
R. speciosa (syn. R. fulgida var. speciosa)
R. subtomentosa (Sweet Coneflower)
R. sullivantii (syn. R. fulgida var. sullivantii)
R. texana
R. triloba (Three-Lobed Coneflower/Brown-eyed Susan)

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Referenced from "The American Horticultural Society A-Z Encyclopedia of Garden Plants", ©1996 Dorling Kindersley Limited Cross referenced against the National Center for Biotechnology Information's Taxonomy Browser.

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