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.
Isoetes, genus Isoetes
(noun) type and genus of the Isoetaceae and sole extant genus of the order Isoetales
Source: WordNet® 3.1
27 January 2025
(adjective) capable of being split or cleft or divided in the direction of the grain; “fissile crystals”; “fissile wood”
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.