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.
rupestral, rupicolous
(adjective) composed of or inscribed on rock; “rupestral drawings in the caves of Northern Spain”
Source: WordNet® 3.1
rupicolous (not comparable)
(botany) Growing on or among rocks.
(zoology) Dwelling among rocks.
• rupicoline
Source: Wiktionary
3 May 2025
(adjective) worth having or seeking or achieving; “a desirable job”; “computer with many desirable features”; “a desirable outcome”
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.