Columnea Pygmaea (Gesneriaceae), a New Species from Northwestern Ecuador
Recent expeditions to the northwestern slopes of the Ecuadorian Andes and revisionary work of Columnea (Gesneriaceae) have resulted in the discovery of a new plant species. The new species, Columnea pygmaea, is distinguished from other congeners by small flowers (< 1 cm), erect shoots, and an obligate epiphytic habit. A discussion that includes a dichotomous key and digital images is presented to provide a better understanding of and to differentiate Columnea pygmaea from C. parviflora, C. herthae, C. minutiflora, and C. lehmannii.
Clark, John L. and Smith, James F.. (2011). "Columnea Pygmaea (Gesneriaceae), a New Species from Northwestern Ecuador". Journal of the Botanical Research Institute of Texas, 5(1), 87-95.