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

by A. C. Seward

[915] Mahr (68), Pl. VIII.

[916] Zeiller (80), p. 34, Pl. CLXI. fig. 9.

[917] Coemans and Kickx (64); Zeiller (80), (88); Schimper (69).

[918] Royle (39), p. 431.

[919] For other figures of this plant, vide Feistmantel (81), Pls. XI. A and XII. A.

[920] Zeiller (91).

[921] Vide also Zeiller (92²), p. 75.

[922] Feistmantel (81), p. 69.

[923] Scott (97).

[924] Scott (96²), p. 15.