CONTENTS 
, b'o i 
No. XCIX, July, ign. 
PAGE 
Gwynne-Vaughan, D. T.—Some Remarks on the Anatomy of the Osmundaceae. With 
Plate XLIV and five Diagrams in the Text.525 
Bower, F. O.—On the Primary Xylem, and the Origin of Medullation in the Ophioglossaceae. 
With Plates XLV and XLVI.537 
Bower, F. O.—On Medullation in the Pteridophyta. With Plate XLVII .... 555 
Prain, D.—A Review of the Genera Erythrococca and Micrococca . . . . *575 
Miyake, Kiichi, and Yasui, Kono.—O n the Gametophytes and Embryo of Pseudolarix. 
With Plate XLVIII.639 
Faull, J. H.—The Cytology of the Laboulbeniales ..649 
Thoday (Sykes), M. G.—On the Histological Relations between Cuscuta and its Plost. 
With Plates XLIX-LI.655 
Beer, R.—Notes on the Development of the Carpophore of some Agaricaceae. With Plate 
LII.683 
Yendo, K.—The Development of Costaria, Undaria, and Laminaria. With Plates LIII-LV 691 
Henslow, G.—The Origin of Monocotyledons from Dicotyledons, through Self-adaptation 
to a Moist or Aquatic Habit.717 
Bancroft, N.—On the Xylem Elements of the Pteridophyta. With Plate LVI and three 
Figures in the Text.745 
de Bruyn, H.—The Ontogenetic Development of the Stele in Two Species of Dipteris. 
With Plates LVII and LV 1 II.761 
Campbell, D. H.—The Embryo-sac of Pandanus. With Plates LIX and LX and two 
Figures in the Text ... ......... 773 
Schwartz, E. J.—The Life-history and Cytology of Sorosphaera Graminis. With Plate 
LXI ..791 
Stoward, F.—A Research into the Amyloclastic Secretory Capacities of the Embryo and 
Aleurone Layer of Hordeum with Special Reference to the Question of the Vitality 
and Auto-depletion of the Endosperm. Part I. 799 
NOTE. 
Petch, T.—Note on the Biology of the Genus Septobasidium ..843 
No. C, October, 1911. 
Fraser, H. C. I., and Snell, J.—The Vegetative Divisions in Vicia Faba. With Plates 
LXII and LXIII.845 
Wilson, M.—Plant Distribution in the Woods of North-East Kent. Part I. With Plates 
LX 1 V-LXVI and four Figures in the Text.857 
Stopes, M. C.—On the True Nature of the Cretaceous Plant Ophioglossum granulatum, 
Heer. With two Figures in the Text.903 
Gates, R. R.—Pollen Formation in Oenothera gigas. With Plates LXVII-LXX . . 909 
Davis, B. M.—Cytological Studies on Oenothera. III. A Comparison of the Reduction 
Divisions of Oenothera Lamarckiana and O. gigas. With Plates LXXI-LXXIII . 941 
Carter, M. G.—A Reconsideration of the Origin of c Transfusion Tissue With four Figures 
in the Text.* 975 
