publication venue for
- Twenty-seven modes of reproduction in the obligate lichen symbiosis 2018
 - New synonymies for Ruellia (Acanthaceae) of Costa Rica and notes on other neotropical species 2012
 - A synopsis of Costa Rican Ruellia (Acanthaceae), with descriptions of four new species 2007
 - SYSTEMATICS OF AUTOPOLYPLOIDY IN EPILOBIUM LATIFOLIUM (ONAGRACEAE) 1968