Columnea microcalyx Hanst. Columnea microcalyx Hanst. in Linnaea 34(4): 408. 1865 sec. Ulloa Ulloa & al. 2018=Columnea tuerckheimii Sprague in Bull. Misc. Inform. Kew 1912(1): 42–43. 1912 syn. sec. POWO 2019