Fossil plants, Vol. 2: A text-book for students of botany and geology

by A. C. Seward

[1212] See Seward (94) p. 441, for a description of the floating plants on the lagunas of Gran Chaco (S. America) by Prof. Graham Kerr.

[1213] Bower (08) p. 611.

[1214] Hollick (94).

[1215] E.g. Lesquereux (78) Pl. LXIV. fig. 14; Pl. V. fig. 10. Staub (87) Pl. XIX. fig. 2.

[1216] Zeiller (03) Pl. LI. figs. 2, 3.

[1217] Heer (55) A. Vol. III. p. 156, Pl. CXLV. figs. 1–315.

[1218] Zeiller (09²) p. 95.

[1219] Fritel (08).

[1220] See also Arber (06) p. 228.

[1221] Solms-Laubach (91) A. p. 183.