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Novae Gesneriaceae Neotropicarum XVII: New Combinations and TypificationsJohn L. Clark, Laurence E. Skog and Fred R. Barrie · Novon · 2011
Novae Gesneriaceae Neotropicarum VIII: Alloplectus grandicalyx, a New Species from Colombia and EcuadorJohn L. Clark and Laurence E. Skog · Novon · 2002
Phylogenetic Relationships and Generic Boundaries in the Episcieae (Gesneriaceae) Inferred from Nuclear, Chloroplast, and Morphological DataJohn L. Clark, Patrick S. Herendeen, Laurence E. Skog and Elizabeth A. Zimmer · Taxon · 2006
Novae Gesneriaceae Neotropicarum XVI:Cremosperma anisophyllum, a new species of Gesneriaceae from the Chocó region of northern Ecuador and southern ColombiaJohn L. Clark; Laurence E. Skog · 2011