CONTENTS. 
PAGE 
BOWER, F. O. — Studies in the Phylogeny of the Filicales. IV. Blechnum and Allied 
Genera. With Plates XXII-XXXII and twenty-six Figures in the Text . . . 363 
Acton, Elizabeth. — Observations on the Cytology of the Chroococcaceae. With Plates 
XXXIII and XXXIV 433 
Keene, Mary Lucille. — Cytological Studies of the Zygospores of Sporodinia grandis. 
With Plates XXXV and XXXVI 455 
SlNNOTT, Edmund W. — Some Jurassic Osmundaceae from New Zealand. With Plate 
XXXVII 471 
WATSON, D. M. S.— On the Structure and Origin of the Ulodendroid Scar. With Plate 
XXXVIII and two Figures in the Text . . . . . . . .481 
Harris, J. Arthur.— On a Chemical Peculiarity of the Dimorphic Anthers of Lager- 
stroemia indica, with a Suggestion as to its Ecological Significance. With two Figures 
in the Text 499 
BERRIDGE, E. M. — The Structure of the Flower of Fagaceae, and its Bearing on the 
Affinities of the Group. With nine Figures in the Text 509. 
Boodle, L. A. — On the Trifoliolate and other Leaves of the Gorse (Ulex europaeus, L.) . 527 
Bottomley, W. B. — The Significance of Certain Food Substances for Plant Growth. 
With two Figures in the Text . 531 
WORSDELL, W. C.— The Morphology of the ‘ Corona’ of Narcissus. With three Figures 
in the Text ... . . . . . . . . . . . . 541 
NOTE. 
Blackwell, Elsie M. — Preliminary Note on Occurrence of Stomata in Hypogeal 
Cotyledons 545 
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