Species: 4, 1 natural hybrid.
Geography: eastern Brazil.
- Arrojadoa xalbiflora Buining & Brederoo 1975 (Brazil)
= Arrojadoa dinae x Arrojadoa rhodantha.
- Arrojadoa bahiensis (P. J. Braun & Esteves) N. P. Taylor & Eggli (Bahia, Brazil)
= Floribunda bahiensis P. J. Braun & Esteves 1993.
= Pierrebraunia bahiensis (P. J. Braun & Esteves) Esteves 1997.
- Arrojadoa dinae Buining & Brederoo 1973 (Bahia, Minas Gerais, Brazil)
= Arrojadoa eriocaulis Buining & Brederoo 1973
= Arrojadoa dinae subsp. eriocaulis (Buining & Brederoo) N. P. Taylor & Zappi 1997
= Arrojadoa multiflora F. Ritter 1979
= Arrojadoa eriocaulis var. albicoronata W. Van Heek, R. Pail et al. 1982
= Arrojadoa eriocaulis subsp. albicoronata (W. Van Heek, R. Pail et al.) P. J. Braun & Esteves 1995
= Arrojadoa beateae P. J. Braun & Esteves 1989
= Arrojadoa dinae var. nana P. J. Braun & Esteves 1991
= Arrojadoa dinae subsp. nana (P. J. Braun & Esteves) P. J. Braun & Esteves 1995
- Arrojadoa penicillata (Gürke) Britton et Rose 1920 (Bahia, Brazil)
= Cereus penicillata Gürke 1908
- Arrojadoa rhodantha (Gürke) Britton et Rose 1920 (Bahia, Paulí, Minas Gerais, Brazil)
= Cereus rhodanthus Gürke 1908
= Cephalocereus rhodanthus (Gürke) Werdermann 1932
= Arrojadoa aureispina Buining & Brederoo 1972
= Arrojadoa rhodantha var. aureispina (Buining & Brederoo) P. J. Braun & Esteves 1995
= Arrojadoa rhodantha subsp. aureispina (Buining & Brederoo) P. J. Braun & Esteves 1995
= Arrojadoa canudosensis Buining & Brederoo 1972
= Arrojadoa rhodantha subsp. canudosensis (Buining & Brederoo) P. J. Braun 1988
= Arrojadoa theunisseniana Buining & Brederoo 1973
= Arrojadoa horstiana P. J. Braun & G. Heimen 1981
= Arrojadoa rhodantha subsp. reflexa P. J. Braun 1984
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