[1172] McNicol (08).
[1173] Gwynne-Vaughan (09).
[1174] Compare figures of the vascular cylinders of climbing Dicotyledons given by Schenck (93).
[1175] For a figure of the stele see Tansley (08) p. 25, fig. 20.
[1176] Stenzel (89) Pls. III. and IV.
[1177] Binney (72).
[1178] Williamson (74) A.
[1179] Bertrand, P. (09).
[1180] Felix (86) A.
[1181] Renault (69).