Index. 
Scott, D. H. — On a Palaeozoic Fern, the Zygopteris Grayi of Williamson. With Plates I-V 
and one Figure in the Text ........... 
The Structure of Mesoxylon Lomaxii and M. poroxyloides. With Plates 
LXXXVII-XC . 
Spratt, Ethel R.— The Morphology of the Root Tubercles of Alnus and Elaeagnus, and 
the Polymorphism of the Organism causing their Formation. With Plates XIII 
and XIV 
The Formation and Physiological Significance of Root Nodules in the 
Podocarpineae. With Plates LXXVII-LXXX 
Stephens, Edith L. — The Structure and Development of the Haustorium of Striga lutea. 
With Plate XCIII 
Note on the Anatomy of Striga lutea, Lour. ..... 
Stiles, W. — The Podocarpeae. With Plates XLVI-XLVIII and eight Figures in the Text 
Thoday (Sykes), M. G. — Note on the Inflorescence Axis in Gnetum ..... 
, and Berridge, Emily M. — The Anatomy and Morphology of the 
Inflorescences and Flowers of Ephedra. With Plate LXXXV and twenty-one 
Figures in the Text .......... . . 
Thompson, W. P. — The Anatomy and Relationships of the Gnetales. I. The Genus Ephedra. 
With Plates XCIV-XCVI1 and two Figures in the Text ..... 
Ward, F. Kingdon. — Some Plant Formations from the Arid Regions of Western China . 
Welsford, Evelyn J. — The Morphology of Trichodiscus elegans, Gen. et Sp. Nov. With 
Plate XXVII 
— see Blackman, V. H. 
Yapp, R. H. — Spiraea Ulmaria, L., and its Bearing on the Problem of Xeromorphy in 
Marsh Plants. With Plates LXXXI-LXXXIII and eleven Figures in the Text 
B. LIST OF ILLUSTRATIONS. 
Plates. I-V. 
Zygopteris Grayi (ScotT). 
VI-X. 
Desert Plants (MacDougal). 
XI, XII. 
Myrica Gale (Bottomley). 
XIII, XIV. 
Root-tubercles of Alnus and Elaeagnus (SPRATT). 
XV, XVI. 
Bacterial Disease of Potato (Dale). 
XVII-XIX. 
Viola (Bliss). 
XX, XXL 
Salicales (Holden). 
XXII. 
Cordaites Felicis (Benson). 
XXIII-XXVI. 
Olpidiopsis (Barrett). 
XXVII. 
Trichodiscus elegans (Welsford). 
XXVIII, XXIX. 
Peranema and Diacalpe (Davie). 
XXX-XXXVI. 
Lophosoria and other Ferns (Bower). 
XXXVII-XL. 
Laboulbenia (Faull). 
XLI-XLIV. 
Cytology of Primula (Digby). 
XLV. 
Ulva (Delf). 
XLVI-XLVIII. 
Podocarpeae (Stiles). 
XLIX-LIII. 
Podocarpus (Gibbs). 
LIV, LV. 
Pteridium aquilinum (Hume). 
LVI. 
Tropaeolum (Hill). 
LVII-LIX. 
Gnetum (Duthie). 
LX. 
Gnetum (Pearson). 
LX I. 
Bowenia (Kershaw). 
LX II, LX III. 
Foliar Ray (Bailey). 
LXIV, LXV. 
Equisetum (Browne). 
LXVI, LXVII. 
Spore-development (Beer). 
LXVIII. 
Seedling Anatomy (Lee). 
LXIX. 
Collema (Bachmann). 
Vll 
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