The Collaborative International Dictionary
Perulae
Perula \Per"u*la\, n.; pl. Perul[ae]. [L., dim. of pera wallet, Gr. ?: cf. F. p['e]rule.]
(Bot.) One of the scales of a leaf bud.
(Bot.) A pouchlike portion of the perianth in certain orchides.
Wiktionary
perulae
n. (plural of perula English)