[ad. mod.L. frondescentia, f. L. frondescent-em: see next and -ENCE.] (a) The process or period of coming into leaf. (b) The conversion or development of other organs into leaves. (c) Fronds or leaves collectively.

1

[1793.  Martyn, Lang. Bot., Frondescentia, leafing season … the time of the year when plants first unfold their leaves].

2

1841.  Maunder, Sci. & Lit. Treas., Frondescence, in botany, the precise time of the year and month in which each species of plant unfolds its leaves.

3

1888.  Harper’s Mag., July, LXXVII. 216. Nearly as bright are the masses of pommecannelle frondescence, the groves of lemon and orange.

4