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

by A. C. Seward

Williamson, W. C. (71) On the organization of the Fossil Plants of the Coal-Measures. Memoir I. Calamites. Phil. Trans. R. Soc. vol. CLXI. p. 477, 1871.

—— (71²) On the structure of the woody zone of an undescribed form of Calamite. Proc. Lit. Phil. Soc. Manchester, vol. IV. [3] p. 155, 1871.

—— (71³) On a new form of Calamitean Strobilus from the Lancashire Coal-Measures. Proc. Lit. Phil. Soc. Manchester, vol. IV. [3] p. 248, 1871.

—— (73) On the organization, &c. Mem. IV. Dictyoxylon, Lyginodendron and Heterangium. Phil. Trans. vol. CLXIII. p. 377, 1873.

—— (74) Ibid. Mem. V. Asterophyllites. Phil. Trans. vol. CLXIV. p. 41, 1874.

—— (76) On the organization of Volkmannia Dawsoni, an undescribed verticillate strobilus from the Lower Coal-Measures of Lancashire. Proc. Lit. Phil. Soc. Manchester, vol. V. [3] p. 28, 1876.

—— (78) On the organization, &c. Mem. IX. Phil. Trans. vol. CLXIX. p. 319, 1878.

—— (80) Ibid. Mem. X. Phil. Trans. vol. CLXXI. p. 493, 1880.

—— (81) Ibid. Mem. XI. Phil. Trans. vol. CLXXII. p. 283, 1881.

—— (82) Helophyton Williamsonis. Nature, vol. XXV. p. 124, 1882.