Fossil plants, Vol. 1: [A text-book] for students of botany and geology

by A. C. Seward

[615] Williamson (83²), Pl. XXXIII. fig. 19.

[616] Williamson (78), p. 323, Pl. XX. figs. 14 and 15.

[617] Williamson and Scott (94), p. 888.

[618] Hartig (94), pp. 149, 297, etc.

[619] Renault (96), p. 91.

[620] Williamson and Scott, loc. cit. p. 893. Vide specimens 133*–135* in the Williamson Collection.

[621] E.g. specimen 132*** in the Williamson Collection.

[622] Vide Williamson (71), Pl. XXVIII. fig. 38; (71²), Pl. IV. fig. 15; (78), Pl. XXI. figs. 26–28. Williamson and Scott (94), Pl. LXXII. figs. 5 and 6. Renault (93), Pl. XLV. figs. 4–6, etc. Felix (96), Pl. IV. figs. 2 and 3.

[623] Strasburger (91), Pl. II. fig. 40.

[624] Williamson (78).