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

by A. C. Seward

[645] Ettingshausen (55).

[646] Schimper (69), p. 323.

[647] Grand’Eury (90).

[648] Martin (09), Pl. XX. figs. 4 and 6.

[649] Schlotheim (20), p. 397.

[650] Sternberg (25), p. xxviii.

[651] Brongniart (28), p. 154.

[652] Lindley and Hutton (31), Pl. CXCI.

[653] Ettingshausen (55), p. 28.

[654] Schimper (69), Pls. XXII. and XXVI. fig. 1.