Bot. [ad. mod.L. cistoma, incorrectly for cistostoma, f. Gr. κίστη + στόμα mouth.] A prolongation of the cuticle over the surfaces of the stomatal cleft.
1835. Lindley, Introd. Bot. (1848), I. 147. Gasparrini states that beneath the stomates of the stem of certain Indian Thistles … there is situated a vesicular organ which he terms Cistome.
1870. Bentley, Bot., 49.
