19 May, 1923 
Vol. XXII, No. 2 
THE 
NEW PHYTOLOGIST 
A BRITISH BOTANICAL JOURNAL 
EDITED BY 
A. G. TANSLEY, M.A., F.R.S. 
UNIVERSITY LECTURER IN 
CAMBRIDGE 
IN CONSULTATION 
THE 
PAGE 
An Example of Leaf-enation in Allium ursinum L. By S. L. Ghose, M.Sc. 
(Panjab). (With io figures in text).. .49 
The Taxonomy and Variation of the Genus Microcystis in Ceylon. By 
W. B. Crow. (With Plate I) . . . . . . . . 59 
Tetraedroides spetsbergensis gen. et sp. nov., a New Alga from Spitzbergen. 
(Results of the Oxford University Expedition to Spitzbergen, No. 28). 
By B. Millard Griffiths, M.Sc., F.L.S. (With Plate II). . . 69 
Permeability (< continued ). By Walter Stiles. Chapter XII. Quantitative 
Relations in the Penetration of Dissolved Substances into Plant Cells . 72 
Convolvulus nitidus Boiss., from the Balkan Peninsula. By W. B. Turrill, 
M.Sc., Royal Gardens, Kew.. . 95 
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