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

by A. C. Seward

[545] Brongniart (28) p. 151.

[546] Schmalhausen (79) p. 12, Pl. I. figs. 1–3.

[547] Solms-Laubach (91) p. 181.

[548] Zeiller (96).

[549] Zeiller (96²).

[550] ibid. (96).

[551] Letter, July 30, 1897.

[552] On this character of Annularian leaves, vide p. 337.

[553] Göppert (45) p. 379, Pl. XXV. figs. 1, 2.

[554] Schmalhausen (79) p. 12.