Coffea dewevrei

Coffea dewevrei De Wild, is considered by some to produce coffee of even lower quality than Robusta. In some places it has replaced Robusta and can sometimes be grown by native populations where the other two species fail. It is of the least importance to world commerce. The trees are large leaved and often called Liberica and Excelsa. The trees grow to over 30 feet in height if not pruned and are planted about 12 by 12 feet, averaging close to 302 to the acre. 

Mazzafera P. (1993) 7-Methylxanthine is not involved in caffeine catabolism in Coffea dewevrei. J. Agric. Food Chem. 41, 1541-3. 

Formation of methyluric acids occurs in a limited number of plant species (Figure 6.61). Radiolabeled feeding experiments indicate that theacrine is obtained from caffeine through a first oxidation and subsequent methylation of the formed intermediate 1,3,7-trimethyluric acid. Leaves of Coffea dewevrei, Coffea liberica, and Coffea Abeokuta convert caffeine to liberine, probably via theacrine and methylliberine [259,261]. 

Noirot, M. Barre, P. Louam, J. Duperray, C. Hamon, S. Consequences of stoichiometric error on nuclear DNA content evaluation in Coffea liberica var. dewevrei using DAPI and propidium iodide. Ann. Bot. 2002, 89, 385-389. 

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