1) Fern genus 2) Genus olfersia 
Olfersia are genus of biting flies in the family of louse flies, Hippoboscidae. There are 7 known species. All species are Parasites of birds. Olfersia are found worldwide with the exception of Australia, but are most abundant in North and Central America. ==Systematics== ...
[n] - genus of fern having only one species
genus Olfersia noun genus of fern having only one species