Bartschella Britton
& Rose, The Cactaceae; descriptions and illustrations of plants of the
cactus family 4: 57-58, f. 55, t. 7, f. 6, 1923
Bartschella
schumannii(Hildmann) Britton & Rose, The Cactaceae; descriptions and
illustrations of plants of the cactus family 4: 58-59, f. 55, t, 7, f. 6, 1923