A Branched Cone of Equisetum. 
1 13 
6. 
E. 
C. Jeffrey. 
7. 
R. 
Kidston. 11 
8. 
O. 
I.ignier. “ 
9. 
H. 
PotoniJ, 1 
10. 
» 5 
11. 
R. 
Sadebeck. 
12. 
D. 
H. Scott. 
13. 
i 
14. 
J > 
15. 
1 
16. 
A. 
C. Seward. 
17. 
H. 
zu Solms-L 
18. 
M. 
G. Sykes. 
“ The Development, Structure and Affinities of the 
genus Equisetum .” Memoirs of the Boston Society 
of Natural History, Vol. V., No. 5, 1899. 
‘ On the Affinities of the genus Potliocites , Patterson.” 
Annals and Magazine of Natural History, Series V., 
Vol. II., 18S3. 
Sphenophyllales ct Equisetalcs, leur origine filicineenne 
commune.” Bulletin de la Societe Linneenne de 
Normandie, Scries V., Vol. VII., 1903. 
“ Lehrbuch der Pdanzenpalaontolgie, mit besonderer 
Riickslcht auf die Bediirfnisse des Geologcn,” 1899. 
“ Die Calamariaceen ” and “ Die Protocalamariaceen.” 
Die Natiirliche Pflanzenfamilien, edited by Engler 
and Prantl. Theil I., Unterabtheilung IV. 
“ Equisetaceen (der Jetztwelt)” Die Natiirliche Pflan- 
zenflamilien, edited by Engler & Prantl, Theil I., 
Unterabtheilung IV. 
“ Studies in Fossil Botany,” 1900. 
“ On a Primitive Type of Structure in Catamites." Report 
of the British Association, Glasgow, 1901. 
The Old Wood and the New.” New Phytologist, 1902. 
“ The Present Position of Palaeozoic Botany.” Pro- 
gressus Rei Botanicae. Band I., Heft I., 1906-7. 
‘ Fossil Plants,” Vol. I., 1898. 
bach. “ Fossil Botany,” English edition, 1891. 
‘‘The Anatomy and Morphology of Tmesipteris .” 
Annals of Botany, 1908. 
NOTES FROM THE CAMBRIDGE BOTANY SCHOOL. 
III.— On a Branched Cone of Equisetum maximum, Lam. 
[Text-Figs 19, 20J. 
By W. Stiles, 
Scholar of Emmanuel College, Cambridge. 
S PECIMENS of Equisetum in which branching of the strobilus 
has taken place are not infrequently met with, anti have 
been referred to by various writers from time to time. 1 
In view of the possibility that such abnormal types of structure 
may shed some light on morphological problems, the structure of a 
cone of E. maximum, grown in the Cambridge Botanic Garden, 
' Milde, J. Nova Act. Acad. Caes. Leop. Carol., Vol. XXVI., 
Tart 2, p. 412, 1857. Duval-Jouve, J. Histoire Naturelle 
des Equisetum de France, p. 152, Paris, 1864. Luerssen, C. 
in Rabenhorst’s Kryptogamen-Flora III., p. 683, Leipzig, 
1889. 
