102 SUMMAKY OF CUBEENT RESEARCHES RELATING TO 



phospliorescent, resembling tliat of the rhizomorpli-forming fungi. 

 It is probable that other allied species may exhibit a similar 

 phenomenon. 



New Ascomycetes.* — W. Voss describes two interesting new 

 Ascomycetes, Phacidium gracile, parasitic on Lycopodmm chamce- 

 eyparissus, and Leptosphceria Fuckelii, on Calnmagrostis sylvatica, both 

 from the neighbourhood of Laibach. The latter occurs on a number 

 of grasses, and is distinguished from the most nearly allied species by 

 the peculiar form of the spores. They are nearly cylindrical, broadly 

 rounded above, and the projecting fourth cell lies about the middle of 

 the spore, only two rather larger cells lying beneath it. In allied 

 species the projecting cell is the second or third (from the top), from 

 four to seven cells lying beneath it. Its habit is that of the much 

 more common L. culmifraga. 



New Entyloma.t — P. Magnus describes Entyloma Helosciadii, a 

 new species parasitic on Helosciadium nodlflorum, only the second 

 species of this genus known to be parasitic on plants belonging to 

 the Umbelliferfc. It is distinguished from the most nearly allied 

 species by the small size and long form of the spores. 



Coremium of Verticillium.f — E. Eidam describes the formation 

 of coremia on Verticillium ruherrimum parasitic on potatoes. They 

 form dry feathery tufts 1-1 • 5 cm. long, which are swayed by the 

 least breath of wind. From 5 to 20 fertile hyphae unite in the 

 formation of a coremium, from which radiate on all sides well- 

 developed filaments of spores with the characteristic verticillate 

 branches. 



Exoascus.§ — E. Sadebeck discusses the characters of the various 

 species of Exoascus, which are parasitic upon, and often very destruc- 

 tive to, different trees. He points out that the statements that the 

 formation of the asci is not preceded by that of a mycelium, rests upon 

 inaccurate observation. The distinct genus Ascomyces proposed by 

 Magnus must therefore fall to the ground. There are on the alder 

 two parasitic species of this fungus, differing very much in appearance, 

 but resembling one another in their course of development. 



Sporendonema easel Desm.|| — In addition to the ordinary fructi- 

 fication of this fungus, cultivated on a decoction of dung, E. Eidam 

 observed hitherto undescribed reproductive organs. On anastomosing 

 mycelial cells a quantity of small protuberances made their appear- 

 ance, which unite into rounded pseudo-parenchymatous bodies. The 

 cells composing these bodies are filled with oil and protoplasm ; they 

 finally swell greatly, and the cortical portion of the mass passes 



* Oesterr. Bot. Zeitschr., xxxii. (1882) pp. 357-9. 



t Hedwigia, xxi. (1882) pp. 129-80 (1 pi.). 



X JB. Schles. Gesellsch. vaterl. Cult. Breslau, Iviii. (1881) pp. 137-8. See 

 Bot. Centralbl., xi. (1882) p. 298. 



§ Versamml. Deutsch. Naturf. u. Aciztc zu Eisenach, 1882. See Bot. Cen- 

 tralbl., xii. (1882) pp. 179-81. 



II JB. Schles. Gesellsch. vaterl. Cult. Breslau, Iviii. (1881) pp. 139-40. See 

 Bot. Centralbl., xi. (1882) p. 298. 



