Rhipsalis angustissima F.A.C.Weber in Bull. Mus. Hist. Nat. (Paris) 8: 465. 1902
Rhipsalis angustissima in Bull. Mus. Hist. Nat. (Paris) 8: 465. 1902
is basionym for Disocactus ramulosus f. angustissimus in Haseltonia 1: 127. 1993
is basionym for Pseudorhipsalis ramulosa f. angustissima in Bradleya 9: 90. 1991
is basionym for Disocactus ramulosus var. angustissimus in Cact. Succ. J. (Los Angeles) 59(2): 67. 1987
is basionym for Kimnachia ramulosa f. angustissima in Phytotaxa 327(1): 31. 2017
Holotype: Costa Rica, [Cartago]: Caché, au S.E. de Cartago, dans la vallée du Reventazon, alt. 1000 m, 1902, Biolley s.n. (P: P4556957) https://science.mnhn.fr/institution/mnhn/collection/p/item/p04556957
Rhipsalis angustissima in Bull. Mus. Hist. Nat. (Paris) 8: 465. 1902