80*5WTL 
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CONTENTS. 
No. LXXXI, January, 1907. 
PAGE 
Lawson, Anstruther A.-— The Gametophytes, Fertilization and Embryo of Cephalotaxus 
drupacea. With Plates I-IV . 1 
Gibbs, L. S.— Notes on the Development and Structure of the Seed in the Alsinoideae. With 
Plates V and VI, and four Figures in the Text 2 5 
Bergtheil, C., and Day, D. L. — On the Cause of 4 Hardness ’ in the Seeds of Indigofera 
arrecta. With Plate VII • • • 57 
McNicol, Mary.— T he Bulbils and Pro- embryo of Lamprothamnus alopecuroides. With 
Plate VIII 61 
Hemsley, W. Lotting. — T wo new Triuridaceae, with some Remarks on the Genus Sciaphila, 
Blume. With Plates IX and X . . 7 1 
Brown, Adrian J. — On the Existence of a Semi-permeable Membrane enclosing the Seeds 
of some of the Gramineae . . • • . *79 
Scott, D. H., and Maslen, A. J.— The Structure of the Palaeozoic Seeds, Trigonocarpus 
Parkinsoni, Brongniart, and Trigonocarpus Oliveri, sp. nov. I. With Plates XI-XI V 89 
NOTES. 
Ewart, A. J. — The Delayed Dehiscence of Callistemon rigida, R.Br. . . . . 1 35 
Ellis, David.— On the Constancy of Cilia-insertion in Bacteriaceae . . . . 1 37 
No. LXXXII, April, 1907. 
Hill, A. W. — A Revision of the Geophilous Species of Peperomia, with some additional 
Notes on their Morphology and Seedling Structure. With Plate XV . . . 139 
Farmer, J. Bretland, and Digby, L. — Studies in Apospory and Apogamy in Ferns With 
Plates XVI-XX 161 
Lang, W. PI.— On the Sporogonium of Notothylas. With Plate XXI . . . . 201 
Wigglesworth, Grace. — The Young Sporophytes of Lycopodium complanatum and 
Lycopodium clavatum. With Plate XXII, and four Diagrams in the Text . . 21 1 
Fritsch, F. E.— The Subaerial and Freshwater Algal Flora of the Tropics. A Phyto- 
geographical and Ecological Study 235 
Stopes, M. C. — A Note on Wounded Calamites. With Plate XXIII, and four Diagrams in 
the Text 277 
Lawson, A. A. — -The Gametophytes and Embryo of the Cupressineae, with special reference 
to Libocedrus decurrens. With Plates XXIV-XXVI 281 
NOTES. 
Oliver, F. W. — Note on the Palaeozoic Seeds, Trigonocarpus and Polylophospermum . . 303 
Beer, Rudolf. — The Supernumerary Pollen-grains of Fuchsia ...... 305 
Fraser, FI. C. I. — Contributions to the Cytology of Humaria rutilans, Fr. .... 307 
