NOTICE TO SUBSCRIBERS. 
Subscriptions for 1923 (22s. 6d. post-free) should be sent to Messrs. Taylor 
and Francis, Red Lion Court, Fleet Street, E.C. 4, without delay. 
No. 725 MAY, 1923 Vol. LXI 
THE 
JOURNAL OF BOTANY 
BRITISH AND FOREIGN 
EDITED BY 
JAMES BRITTEN, K. C. S. G., F.L.S. 
LATE SENIOR ASSISTANT, DEPARTMENT OF BOTANY, BRITISH MUSEUM. 
CONTENTS 
• w 
PAGE 
Apium leptophyllum. By T. A. 
Sprague, B.Sc., F.L.S. 129 
New Tropical African Umbelliferse. 
By Cecil Norman . 133 
A New Cercospora on Humulus. By 
E. S. Salmon and H. Wormald. 134 
Thymus lanuginosus in Herb. Miller. 
By A. J. Wilmott, F.L.S. 136 
Freshwater Plankton Algre from Cey¬ 
lon. By W. B. Crow, M.Sc., 
Ph.D. 138 
Alnus incana DC. By J. E. Little, 
M.A. 146 
Ehrhart and the ‘ Supplementum Plan- 
tarum.' By James Britten, 
F. L.S.‘.. 148 
PAGE 
Short Notes: —Astragalus frigidus 
A World-code of Nomencla¬ 
ture— Pulmonaria angustifolia 
L. (P. azurea Besser). 151 
Reviews :— 
Introduction to the Plant-life of the 
Oxford District. Pt. I. General 
Review. By A. H. Church . . 152 
Botany of the Living’ Plant. By 
F. O. Bower, Sc.D., F.R.S. 153 
Starch and Starch Products. By 
Harold A. Auden . 154 
Book-Notes, News, etc.. 155 
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