The Collaborative International Dictionary of English v.0.48:

Squamula \Squam"u*la\ (skw[a^]m"[-u]*l[.a] or
   skw[=a]"m[-u]*l[.a]), n.; pl. Squamulae (-l[=e]). [L., dim.
   of squama a scale.] (Bot.)
   One of the little hypogynous scales found in the flowers of
   grasses; a lodicule.
   [1913 Webster]