a. Nat. Hist. [f. L. lūteus yellow + -ESCENT.] Inclining to yellow.
1819. Samouelle, Entomol. Compend., 182. Hinder margin of the thorax red lutescent.
1887. W. Phillips, Brit. Discomycetes, 167. Helotium Humuli. Cup … becoming slightly concave, lutescent, firm.
b. in combining form lutescenti-.
1871. W. A. Leighton, Lichen-flora, 261. Lecidea ochrococca, Nyl. lutescenti-ochraceous, granulose, effuse [etc.]. Ibid., 297. Epithecium … slightly lutescenti-fuscescent … or dusky.
