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.
tracheid
(noun) long tubular cell peculiar to xylem
Source: WordNet® 3.1
tracheid (plural tracheids)
(botany) A tracheid cell.
• thridace
Source: Wiktionary
Tra"che*id, n. (Bot.)
Definition: A wood cell with spiral or other markings and closed throughout, as in pine wood.
Source: Webster’s Unabridged Dictionary 1913 Edition
26 June 2025
(adverb) in a dispirited manner without hope; “the first Mozartian opera to be subjected to this curious treatment ran dispiritedly for five performances”
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.