Catalogue of the vascular plants of Ecuador = Catálogo de las plantas vasculares del Ecuador - González, Amada Pedroni. (Missouri Botanical Garden Press, 1999)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 2006)

Gesneriads : the journal for Gesneriad growers - Gesneriad Society. (Gesneriad Society, 2008)

The Gloxinian - American Gloxinia; Gesneriad Society. (American Gloxinia and Gesneriad Society, 2004)

The Gloxinian - American Gloxinia; Gesneriad Society. (American Gloxinia and Gesneriad Society, 2004)