Jan Basteimeijr writes:
"In 1979, Wim de Wilde and Brigitta Duyfjes collected a new Cryptocoryne in the Leuser Reserve in northern Sumatra with strongly bullated leaves. Because there wasn't an inflorescence, many growers were involved to get this plant into flower. Robert A. Gasser was the first who succeed. His plant was the basis for the description by De Wit and Jacobsen (de Wit 1983) as C. amicorum, the 'Crypt of the friends'. Soon it turned out that other plants from the same collection could have a yellowish to purple limb of the spathe. A second collection in 1991 gave the same variation, however the original red striped limb is never seen again."