Toumeya1 species is recognized.
Distribution: Central Arizona, New Mexico, N Texas. Colorado Desert.
Toumeya papyracantha (Engelmann) Britton & Rose 1922Gramma Grass Cactus
SynonymyToumeya papyracantha (Engelmann) Britton & Rose Cactaceae, 3:91, 1922.
Basionym: Mammillaria papyracantha Engelmann, Mem. Amer. Acad. II, 4:49, 1849.
Echinocactus papyracanthus Engelmann, Trans. Acad. Sci. St. Louis, 2:198, 1863.
Toumeya papyracantha (Britton & Rose) Marshall, Saguaroland Bulletin XII, 114, 1956, later homonym.
Pediocactus papyracanthus (Engelmann) L. Benson Cact. & Succt. J. (US) 34:61, 1962.
Sclerocactus papyracanthus (Engelmann) Taylor, Bradleya, New and unfamiliar names of Cactaceae to be used in the European Garden Flora, 5:91 f.1987.
Type: "In a valley between the lower hills near Santa Fe in loose sandy red soil. Fendler, May 15.1847" MO.
Other representative material studied:
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