Syn.: Astragalus triphyllus Pursh, Orophaca caespitosa (Nutt.) Britton, Phaca caespitosa Nutt., Phaca triphylla Eaton et Wright, Tragacantha triphylla Kuntze
Family: Fabaceae Lindl.

Syn.: Centaurea preauxiana Webb et Berthel.
Family: Asteraceae Bercht. et J. Presl

Syn.: Alyssum saxatile auct., Alyssum arduini Fritsch
Family: Brassicaceae Burnett

Syn.: Cylindropuntia subulata (Muehlenpf.) F. M. Knuth, Opuntia subulata (Muehlenpf.) Engelm., Pereskia subulata Muehlenpf., Pereskiopsis subulata (Muehlenpf.) Britton et Rose ex Rose
Family: Cactaceae Juss.