62 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Lepidostrobus Bertrandi.* — M. Zalesski, writing od the fossil plants 

 of the Carboniferous of the Donetz basin, gives a description of the 

 anatomical structure of Lepidostrobus Bertrandi, & new species resembling 

 L. Oldhamius, but differing in its larger size, longer-stalked sporangial 

 bracts, etc. It occurred in a limestone block with Stigmaria Spheno- 

 phyllum, etc., at a locality not precisely known. 



Lepidophloios Scottii.f — W. T. Gordon gives an account of the 

 structure of Lepidophloios Scottii,a new species from the calciferous sand- 

 stone series at Pettycur (Fife). It has halonial tubercles, and has the 

 characteristic leaf-bases of Lepidophloios, but its central strand has not 

 the structure of L. Harcourti, which is usually regarded as typical of 

 Lepidophloios. It agrees much more with Lepidodendron vasculare and 

 L. Hiclcii, which are typical species of Lepidodendron. The vascular 

 bundles which run out to the halonial tubercles have the customary 

 solid central wood. The leaf-trace is collateral, the xylein mesarch. 

 Below it lies a parichnos-bundle which only forks close up to the leaf- 

 scar. The ligular pit has certain peculiarities. 



Calamites compared with Equisetum.J— A. R. Horwood gives an 

 account of the fossil Calamites Schutzei Stur., found near Leicester. It 

 has a hollow stem and a regular succession of uniformly increasing 

 internodes, with a marked recurrence of a short internode — a feature 

 which is common also, with some modifications, in modern Equisetum. 

 These points • he discusses in detail, and illustrates with five tables and 

 two plates. 



Anatomy of New Zealand Lycopodiaceae.§ - J. E. Holloway has 

 made a comparative study of the anatomy of six New Zealand species 

 of Lycopodium, viz. L. volubile, L. scariosum, Z. densum, L. laterale, 

 L. cernuum, L. Billardieri. A description is given of the early stages 

 in the development of the young plants, and of the development of the 

 stelar anatomy of the mature plant ; and also of the development of 

 dimorphism in the leaf-arrangement of L. volubile and L. scariosum. 

 The protballus, protocorm, foot, first root, protophylls, young stem and 

 leaves, etc., are discussed. As regards their stelar structure, the six 

 species may be classified as follows. 1. Mixed {L. cernuum, L. laterale). 

 2. Banded — (a) radial (L. Billardieri) ; {b) parallel (L. volubile, L. 

 scariosum, L. densum). The relation between the " radial " and the 

 " parallel " types is discussed, as also is the difference between the 

 " mixed " and " banded " types. 



Fossil Lycopodium.|! — E. W. Berry gives an account of Lt/copodium 

 cretaceum, a previously undescribed species from the Upper Cretaceous 

 sands near Middendorf, in South Carolina, corresponding with the 

 Turonian of Europe. The fragments found consist of some seventeen 

 fruiting spikes, of various sizes, the largest being 5 cm. long by 5 mm. 



* Mein. Com. geol. n. b. livr. 46, St. Petersbourg, 1908, 33 pp. (9 pis.). 



t Trans. Roy. Soc. Edin., xlvi. (1908) pp. 443-453 (3 pis.). 



X Journ. Linn. Soc. (Bot.) xxxix. (1910) pp. 277-289 (2 pis.). 



§ Trans. Proc. New Zealand Inst., xlii. (1910) pp. 356-370 (4 pis. and 2 figs.). 



|| Amer. Journ. Sci., xxx. (1910) pp. 275 -G (figs.). 



