The Collaborative International Dictionary
Festucine
Festucine \Fes*tu*cine\ (? or ?), a. [L. festula stalk, straw. Cf. Fescue.] Of a straw color; greenish yellow. [Obs.]
A little insect of a festucine or pale green.
--Sir T.
Browne.
Douglas Harper's Etymology Dictionary
festucine
"straw-colored," 1640s, from Latin festuca "straw" (see fescue).
Wiktionary
festucine
a. (context obsolete English) Of a straw colour; greenish-yellow. n. (context organic compound English) loline, an alkaloid with the formula C₈H₁₄N₂O.