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

by A. C. Seward

[625] Williamson (71), p. 507.

[626] Williamson (71²), Pl. I. fig. 1; (78), Pl. XXI. fig. 31.

[627] Lyell (55), p. 368.

[628] Williamson (96), p. 194.

[629] Vide specimens 15–17, etc. in the Williamson Collection.

[630] The stem of fig. 83 is an example of Arthrodendron, but the appearance of the secondary xylem agrees with that in some forms of Arthropitys.

[631] For figures of this type of stem vide Göppert (64); Cotta (50), Pl. XV. (specimens 13787 in the British Museum Collection); Mougeot (52), Pl. V.; Stur (87), pp. 27–31; Renault (93), Pls. XLIV. and XLV. etc.

[632] Williamson (71), (71²), (87), fig. 5.

[633] Williamson and Scott (94), p. 879

[634] Vide Williamson (87²). In this paper Williamson compares the three subgenera of Calamite stems. Renault and Zeiller (88), Pl. LXXV. Renault (93), Pls. LVIII. and LIX.