[1022] Kidston (87).
[1023] Kidston (82) p. 32.
[1024] Kidston (842) p. 594.
[1025] Williamson (83) A.
[1026] Kidston (06).
[1027] Heer (76) A. p. 71, Pl. XXIV. fig. 1.
[1028] Schimper (74) A. Pl. 38; see also Schenk (88) A. p. 31.
[1029] Leuthardt (04) p. 29, Pl. XIII. figs. 1, 2.
[1030] Goeppert (362) A. Lief. I. and II. Pl. IV.
[1031] Schimper (69) A. p. 607.