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.
rauwolfia, rauvolfia
(noun) any shrub or small tree of the genus Rauwolfia having leaves in whorls and cymose flowers; yield substances used medicinally especially as emetics or purgatives or antihypertensives
rauwolfia
(noun) any of several alkaloids extracted from the shrub Rauwolfia serpentina
Source: WordNet® 3.1
From the genus name.
rauwolfia (plural rauwolfias)
Any of several small trees and shrubs, of the genus Rauwolfia, that yields materials of medical use.
Any of a group of alkaloids extracted from these trees.
Source: Wiktionary
23 May 2025
(adverb) showing consideration and thoughtfulness; “he had thoughtfully brought with him some food to share”
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.