ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 1009 



0. rubella P. and 0. lilacina Wulf. Earsten, however, in 1871, 

 nnited with it certain species belonging to the genera Bulgaria and 

 Cudonia (Helotium of some authors), while the OmbrojMla of Boudier 

 (1885) contained one species, 0. clavus A. S The genus OmhropMla 

 of Phillips (1887) contained three species taken from three different 

 genera, Bulgaria sarcoides Jacq., Cudonia clavus A. S., and Calloria atro- 

 virens Pers. It appears, however, rational and necessary to the author 

 to preserve for the generic name of this group the sense in which it was 

 first given. The genus Guepinia Fries has been divided by M. Brefeld 

 into Gyrocephalus Pers. and Dacrymyces Kees, which division appears 

 quite justifiable. 



Peridermium Pini.* — Herr H. Klebahn identifies this parasite of 

 the Weymouth pine with Coleosporium Senecionis parasitic on Senecio. 

 He distinguishes three forms of Peridermium, viz. : — (a) P. Pini acicolum, 

 with the spore-membrane warty throughout, on leaves of Pinus sylvestris ; 

 (b) P. Pini corticolum, spore-membrane warty, but with a &i)o\j that is 

 only areolated, on the bark of P. sylvestris ; and (c) P. Strobi n. sp. or 

 var., spore-membrane warty, with a larger quite smooth space, on the 

 bark of P. Strobus. 



Pilacre. f — According to M, E. Boudier, PiJacre is a good genus ; 

 although it was not sufficiently characterized at first by its author, this 

 is not a reason for suppressing it and substituting another. Pilacre 

 faginea, Petersii, and several others of Berkeley's species are not true 

 Pilacres, but belong to the genus Ecchyma, and it is also necessary to 

 substitute this latter name for that of Pilacre in the important works of 

 Brefeld. Pilacre remains a true discomycetous fungus. 



Fusoma.J — On a species of Fusoma which he grew equally well on 

 solid and on fluid substrata, M. E. Wasserzug finds three kinds of 

 spore : — septate fusiform conidia, which vary greatly in size and number 

 according to the medium ; unseptate conidia, formed either at the ex- 

 tremity of slender mycelial filaments or springing directly from the 

 septate conidia ; and a third kind, spherical cysts with thick walls 

 formed within mycelial filaments, and analogous to the so-called 

 chlamydospores of the Mucorini. 



Diplocladmm.f — M. J. Costantin finds a Diplocladium parasitic on a 

 morel, and occurring in two forms — a Diplocladium-iovm., and that of a 

 bulbiform sclerotium. He discusses the question whether this latter 

 form is identical with Hypomyces aurantius or ocliraceus, or with an 

 undescribed species of Hypomyces, but without coming to any definite 

 decision. 



"Edelfaule" of Grapes.]]— Dr. H. Miiller (Thurgau) has determined 

 this disease to be caused by the attacks of a Botrytis, the B. acinorum of 

 Pers., but identical with B. cinerea. Attacking the unripe berries in 

 wet, but only the ripe berries in dry weather, it kills the epidermal 

 cells, increases evaporation, and hence raises the concentration of the 

 juice. It takes up sugar and acids, which it decomposes in the process 



* Abhandl. Natnrw. Ver. Bremen, s. pp. 145-55 (1 pi.). See Hedwigia, xsvii. 

 (1888) p. 118. t Morot's Journ. de Bot., ii. (1888) pp. 261-4. 



J Bull. Soc. Bot. France, xxxv. (1888) pp. 199-204. § Ibid., pp. 291-6 



il Landwirth. Jalirb., 1888, pp. 83-160 (1 pi.). See Bot. Zeit., slvi. (1888) p. 429 



