1857 M. J. BerkeleyIntrod. Cryptogamic Bot. §242. 249 A close cellular tissue, in which the passage from dissepimental walls and threads is almost imperceptible.
1870 G. RollestonForms Animal Life 126 The muscular dissepimental walls of the segments.
This entry has not yet been fully updated (first published 1896; most recently modified version published online March 2018).