vbl. sb. [UN-1 13.] (See quots.)
1848. Lindley, Introd. Bot. (ed. 4), I. 332. Here we have a succession of true unlinings; but in Crucifers the large stamens offer an example of simple unlining in the full meaning of the word, since they present a separation into two parts only.
1862. M. C. Cooke, Man. Bot. Terms, 87. Unlining, a separation of parts originally united.