There are four varieties of commercially viable coffee: Arabica, Liberica, Excelsa, and Robusta. Growers predominantly plant the Arabica species. Although less popular, Robusta tastes slightly more bitter and contains more caffeine.
Pteris, genus Pteris
(noun) large genus of terrestrial ferns of tropics and subtropics; sometimes placed in family Polypodiaceae
Source: WordNet® 3.1
16 April 2025
(adjective) marked by richness and fullness of flavor; “a rich ruby port”; “full-bodied wines”; “a robust claret”; “the robust flavor of fresh-brewed coffee”
There are four varieties of commercially viable coffee: Arabica, Liberica, Excelsa, and Robusta. Growers predominantly plant the Arabica species. Although less popular, Robusta tastes slightly more bitter and contains more caffeine.