Orchideenfach

Peter Bierbaumer, "Real and Not-So-Real Plant-Names in Old English Glosses," in C.P. Biggam, ed., From Earth to Art: The Many Aspects of the Plant-World in Anglo-Saxon England (Amsterdam: Editions Rodopi, 2003), pp. 153-160 (at 155):

The study of Old English plant-names is, after all, what we call in German an Orchideenfach (a very specialized subject without much social relevance) ...

Long live the study of such subjects.

Carl Spitzweg (1808-1885),
Der Kaktusliebhaber
(The Cactus Enthusiast)