VI 
Contents. 
PAGE 
No. CXXXII, October, 1919. 
Petch, T. — Mocharas and the Genus Haeraatomyces. With two Figures in the Text . . 405 
Worsdell, W. C. — The Origin and Meaning of Medullary (Intraxylary) Phloem in the 
Stems of Dicotyledons. II. Compositae. With twenty-seven Figures in the Text . 421 
Arber, Agnes. — Studies on Intrafascicular Cambium in Monocotyledons (III and IV). With 
seven Figures in the Text ............ 459 
Carter, Nellie. — The Cytology of the Cladophoraceae. With Plate XXVII and two Figures 
in the Text . . 467 
Willis, J. C. — On the Floras of Certain Islets outlying from Stewart Island (New Zealand). 
With one Map in the Text 479 
Osborn, T. G. B.— Some Observations on the Tuber of Phylloglossum. With Plate XXVIII 
and forty-three Figures in the Text .... ...... 485 
Smith, A. Malins. — The Temperature-coefficient of Photosynthesis : a Reply to Criticism. 
With two Figures in the Text . • ® <■ 517 
