104 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Later couidia, formed further back, grow out through the sheath of the 

 first, the separating wall splitting to allow the passage. These trans- 

 verse walls arise by ingrowth of the cell-wall substance, which finally 

 meets in the centre and becomes completely closed ; they always arise 

 between the vacuoles. Brierley considers that all endoconidia in fungi 

 probably are formed in the same manner. 



Verrucaster lichenicola.* — Tobler describes this new genus and 

 species of Sphteropsideic which he found growing on the podetium of 

 Gladonia hacillaris below the apothecia. The mycelium of the fungus 

 was entirely identical with that of Gladonia. The pycnidia are wart- 

 like, the sporophores branched, and the spores minute and colourless. 

 The specimen of the host Gladonia was collected by Sandscede at 

 Oldenburg. 



"■ft- 



Uredineae. — W. H. Longf writes on the influence exerted by the 

 host-plant on the morphological character of rusts. Puccmia EUisiana 

 has two widely sepai'ated hosts, Viola and Pentxtemon. When the rust 

 grows on the latter host it assumes the character of another parasite, 

 P. Andropof/onis. Viola is sometimes attacked also by /''. Andro- 

 pogonis, wliich in that case assumes certain characters of P. ElUsiana. 

 The author is of opinion that P. Andropoyonis may p(jssibly have 

 originated from P. EUisiana. 



L. Linsbauer} records his experience of Piiccinia Prwii-spinosee, 

 which seems to winter on the branches, and the Prunus species when 

 attacked do not seem to suffer much damage. It does no harm to 

 neighbouring apricots, and the conclusiisn is that there are two ])iological 

 races : the one parasitic only on damson and wild plum, the other 

 on peach, apricot and almond. There is also great difference in the 

 susceptibility of the various trees. Damsons suffer most. 



Fungi in an Iron Mine.§ — A. Sartory describes a vigorous growth 

 of fungi that grew in a mine on iron itself. The pilei of the fungus 

 were much deformed, but careful examination of the tissues enabled 

 Sartory to identify the species as Goprinus atrammtarius. 



Fungi of East Dorset. || — E. F. Linton has just published a li.st of 

 fungi from this district. The ground is almost entirely of light sandy 

 soil ; but chalk occurs in Cranbourne and St. Giles, and a strip of 

 heavier soils divides the sandy district from the chalk. The present 

 contribution deals with the Agarics Ijelonging to the LeucoHiwrae, 

 Rhodosporae, Ochrosporae and Melanosporse. 



* Abb. Nat. Ver. Bremen, xxi. No. 2 (1913) pp. 383-4. See also Bet. Gen- 

 tralbl., cxxix. (1916) pp. 419-20. 



t Journ. Agr. Res., li. (1914) pp. 303-19. See also Bot. Centralbl., cxxix. (1915) 

 p. 557. 



I Oesterr. Gartenz.. x. No. 9 (1915) pp. 130-2. See also Bot. Centralbl., cxxix. 

 (1915) p. 545. 



§ Bull. Soc. :\Iycol. France., xxx. (1915) pp. 450-1 (1 fig.). 



II Journ. Bot., liii. (1915) pp. 313-2i. 



