For full functionality of this site it is necessary to enable JavaScript. Here are the instructions how to enable JavaScript in your web browser. Roy E. Halling Subprogram: Plant Sciences Research Interests: Systematics, biogeography and conservation of macro-fungi Research Focus: Conservation, Ecology, And Biodiversity|Systematics And Taxonomy Affiliation(s): New York Botanical Garden Phone: (718)817-8613 Email: rhalling@nybg.org Website