692 SUMMARY OF CURRENT RESEARCHES RELATING TO 



found it even in the Hohe Tatra, one of the stations being so high as 

 2350 ft. above sea level. E. Zederbauer * describes the different moss- 

 associations found on various cultivation patches on the Austrian 

 experimental farm in the Grosse Fohrenwald. 



Various Moss Notes. — I. Hagenf publishes notes on a critical 

 Seligeria {8. patula Lindb.) of Scandinavia and North America, on 

 Barbula squamifera Viv., on Fissidens luteofuscus sp. n., from Japan, 

 and on a forgotten bryological work by Roehling. A. GeheebJ publishes 

 notes on the following : — (1) Gyroweisia reflexa Bricl., a species new to 

 Spain ; (2) a gall-formation caused by Nematodes in Pterigynandrum 

 filiforme ; (3) corrections of and additions to his previous paper on 

 further contributions to the moss-flora of New Guinea. J. 0. Bomans- 

 son § describes Bryum pachydermam, a new species allied to B. excurrens, 

 and collected in Aland. I. Theriot describes a new variety of Cinch/lotus 

 aquatic us from Montenegro. 



Anthoceros and its Nostoc Colonies. || — G. J. Peirce gives the 

 results of his experiments in cultivating Anthoceros fusiformis and 

 A. Pearsoni in the presence and absence of Nostoc. The soil natural for 

 the species was used, and in case of some of the cultures was steam- 

 sterihsed. In about twelve weeks after the sowing of the spores, the 

 plants produced archegonia and antheridia. These organs were in- 

 frequent or absent on plants kept too much in the dark. The plants 

 grown on sterilised soil were more robust than the others, and contained 

 no Nostoc colonies. But even on unsterilised soil some of the plants 

 escaped Nostoc infection, and appeared more robust than their fellows. 

 Plants grown in a lateral illumination grew upwards to catch the light, 

 and their elevated parts were consequently less accessible to Nostoc. 

 Anthoceros appears to do better when free from association with Nostoc ; 

 and it does not appear that Nostoc benefits by the association. The 

 fact that short internal hairs or chains of cells of the Anthoceros thallus 

 grow into the mass of the Nostoc colony is simply a question of 

 mechanical pressure and local resistances. 



Lophocolea.^f — F. Stephani continues his monograph of the species 

 of the genus Lophocolea, treating more particularly of the Australasian 

 species. These latter are 70 in number, and the author here describes 

 26 of them, half of which are new. 



Thallophyta. 



Alg-se. 



(By Mrs. E. S. Gepp.) 



How to Collect Algae.** — M. Gomont gives some hints to 

 travellers on the best and easiest methods of preparing algge for an 

 herbarium or for anatomical examination. He divides the algas into 

 two groups, large and small, the first including all species visible to the 



* Die Moose in den Versuchsbestanden. Wien : W. Frick, 1906, 13 pp., figs, 



t Rev. Bryolog., xxxiii. (1906) pp. 49-54. % Tom. cit., pp. 58-60. 



§ Tom. cit., pp. 60-61. || Bot. Gazette, xlii. (1906) pp. 55-9. 



«|j Bull. Herb. Boissier, vi. (1906) pp. 781-96. 



** Journ. de Bot., xx. (1906) pp. 18-22. 



