CONTENTS 
No. LIII, March, 1900. 
PAGE 
Campbell, D. H.—Studies on the Araceae. (With Plates I—III) . 1 
Howard, A.—On a Disease of Tradescantia. (With Plates IV and V) 27 
Worsdell, W. C.—The Structure of the Female ‘ Flower ’ in Coniferae. 
An Historical Study. (With seven Figures in the Text) . 39 
Hill, T. G.—The Structure and Development of Triglochin mariti- 
mum, L. (With Plates VI and VII).83 
Seward, A. C., and Gowan, Miss J.—The Maidenhair Tree (Ginkgo 
biloba, L.) (With Plates VII 1 -X).109 
NOTES. 
Parkin, J.—On the Reserve-Carbohydrates of the Bulb of the Hyacinth 
(Hyacinthus orientalis, L.).155 
Lewis, F. J.'—Formation of an irregular Endodermis in the Roots of 
Ruscus, sp. (With two Figures in the Text) . . . 157 
Worsdell, W. C.—The Anatomical Structure of Bowenia spectabilis, 
Hook.159 
Wild, G., and Lomax, J.—A new Cardiocarpon-bearing Strobilus . 160 
No. LIV, June, 1900. 
Mottier, D. M.—Nuclear and Cell Division in Dictyota dichotoma. 
(With Plate XI).163 
Parkin, J.—Observations on Latex and its Functions. (With Plate 
XII).193 
Barker, B. T. P.—A Fragrant ‘Mycoderma’ Yeast, Saccharomyces 
anomalus (Hansen). (With Plate XIII) . . . .215 
Dawson, Miss M.—On the Biology of Poronia punctata (L.). (With 
Plates XIV and XV).245 
Wager, H.—On the Fertilization of Peronospora parasitica. (With 
Plate XVI).263 
Lang, W. H.—Studies in the Development and Morphology of Cyca- 
dean Sporangia. II. The Ovule of Stangeria paradoxa. 
(With Plates XVII and XVIII).281 
