ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 565 



phorescence has notliing to do with the process of reproduction, and that 

 combustion is an effect rather than the cause of the phenomenon. 



Phosphorescent Mushroom.* — Mr. G. F. Atkinson finds that the 

 hymeuium and a portion of the hymenophore directly adjacent of 

 Agaricus (^Clitocyhe) illudens Schw. emit a phosphorescent light. Very 

 young plants were also phosphorescent, though not so bright as when 

 mature. 



Poroptyche, a new genus of Polyporeae.t — G. Eitter v. Beck gives 

 the following diagnosis of a new genus represented by Poroptyche 

 Candida, found on dry calcareous soil. Fungus resupinato-expansus, in 

 margine definito et sursum accrescens, in tota superficie poriferus, subtus 

 mycelii ramis funiformibus solo indefinite sed arete affixus. Poraa in 

 margine primum foveatfe rotundae, mox magis concavatae, lobis varie 

 accrescentibus tortuosse et labyrinthiformes, saepe clausse, serius 

 stroma poris numerosissimis irregulariter perforatum, et in superficie 

 poris apertis prteditum formantes. Hymenium poros induens. Basidia 

 clavata, in stipitibus brevibus sporas 4 ellipsoideas hyalinas fingentia. 

 Cystidia nulla. 



Mycose on the Sporange of Mosses.J— M. Amann describes a fungus 

 which attacks the sporange of mosses and envelopes the young spores in 

 numerous ramifications, arresting their development, and depriving them 

 of chlorophyll, and finally agglomerating them into a compact mass 

 which is incapable of germination. 



Protophyta. 

 a. Schizoplxyceae. 



Peroniella, a New Genus of Schizophyce8e.§— Dr. C. Gobi finds, 

 attached to the gelatinous envelope of Hyalotheca mucosa, an organism 

 to which he gives the name Peroniella Hyalothecse, and which he places 

 among the Chlorophyceae near to Sciadium and Ophiocytium. It consists 

 of a single cell, at first ovoid or pear-shaped, but afterwards becoming 

 spherical, fixed to the gelatinous sheath of the desmid by an elongated 

 pedicel. The contents of the cell break up into seven or eight uni- 

 ciliated zoospores. The vegetative cell also becomes encysted, by simple 

 thickening of its cell-wall, and contraction of its protoplasm. 



Stomatochytrium, a new genus of Endophytic Protococcacege.il— 

 Dr. D. D. Cunningham describes, under the name Stomatochytrium 

 Limnanthemi, an endophytic green protophyte found in the stomates of 

 the upper surface of the leaf of Limnanthemum indicum, resembling 

 Chlorochytrium Lemnse in its mode of life. It produces zoospores 

 (zoogametes), which conjugate in the ordinary way, the zygosperms 

 coming to rest after a period of swarming ; but no germination was 

 observed either of the zoospores or of the zygosperms. One point in 

 which the genus is stated to differ from Chlorochytrium is that the 

 zoospores are set free within the zoosporange. It is, like Chlorochytrium, 

 not a true parasite, but an endophyte. 



* Bot. Gazette, xiv. (1889) p. 19. 



t Vt-rhandl. K. K. Zool.-Bot. Clesell. Wien, 1888, pp. 657-8 (3 fi^s.) 

 X Key. Bryol., xvi. (1889) p. 13. 



§ Sciipta Botanica, i. (1887) 1 pi. See Bull. Soc. Bot. France, xxxvi. (1889) 

 Rev. Bibl., p. 6. 



II Sclent. Mem. by nicilical ofBcers of the army of Imlia, part iii. 1888, pp. 33-40. 



