Smith, J. F. 1994: Systematics of Columnea section Pentadenia and section Stygnanthe (Gesneriaceae). – Syst. Bot. Monogr. 44: 1-89

Title	Systematics of Columnea section Pentadenia and section Stygnanthe (Gesneriaceae)
Authorship	Smith, J. F.
Date published	1994
Volume	44
In journal	Syst. Bot. Monogr.
Pages	1-89