Lombardi J. A., On the identity of Lepismium lineare and L. warmingianum (Cactaceae, Rhipsalidae), Phytotaxa, 2014, 161(2):177-180, doi: 10.11646/phytotaxa.161.2.11
Taxonomic study comparing Lepismium lineare and L. warmingianum through field observations, herbarium material and cultivated plants. It provides descriptions of both species and an identification key to Brazilian Lepismium. Floral and young-fruit characters distinguish the species and complement the less consistent differences between vegetative shoots.