ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 833 



or elliptical spore-like structures at tlieir apices when the nutrient 

 substratum begins to be exhausted. 



Glycogen in Fungi.* — M. L. Errera recapitulates the microchemical 

 tests by which he has determiued the presence of glycogen in certain 

 fungi, among which he names Peziza vesiculosa, Tuber melanosporum , 

 T. sestivum, Phy corny ces nitens, Clitocybe nebular is, and Phallus impn- 

 dicus. He believes this substance to be generally distributed through 

 the Ascomycetes, Mucorini, and Basidiomycetes, and to be used up in 

 the formation both of the tissues and of the spores. 



Laticiferous System of Lactarius.f — Prof. A. Weiss describes 

 in detail the segmented latex-vessels in the receptacle of Lo,ctarius 

 deliciosus. He finds them to be true vessels formed by the fusion of 

 cells, such as were supposed to be confined to the higher plants. 

 The mature laticiferous vessels are of considerably larger diameter 

 than the ordinary hyphfe of the stipes and pileus ; they branch 

 copiously, but the different tubes do not in any way coalesce or form 

 an anastomosing network ; they are segmented by septa, especially in 

 the neighbourhood of the branches. They are so densely packed 

 that there may be as many as 400-500 in a square mm., and are 

 most numerous in the peripheral layers of the stipes and in the 

 medullary tissue ; in the sub-bymenial layer they are at first alto- 

 gether wanting. Even when mature a nucleus is to be recognized in 

 them without difficulty. 



Development of the Receptacle of Phalloideae.:}:— M. E. Fischer 

 describes the development of the receptacle in Ilhyphallus tenuis, 

 I. rugulosus, Dictyophora campanulata, and Mutinus bamhusinus. He 

 distinguishes four types, viz. (1) Mutinus; (2) Ithyphallus tenuis 

 and impudicus ; (3) species with an involucre (Dictyophora) ; and 

 (4) Kalchbrennera, He regards the species with an involucre as 

 showing a distinct affinity with the Agaricini provided with a volva. 



New Sphseriacese.§ — M. C. Eichon describes a number of new 

 species of fungus belonging to the Sphjeriacere, among them a fossil 

 form from the tertiary formation in the neighbourhood of Rheims, 

 which he calls Leptosphserites Lemoinii. Also a new genus of recent 

 forms, Lophiotricha, with the following diagnosis : — Perithecia sim- 

 plicia, innato-superficialia, carbonacea, nigra, strigoso-pilosa, villo 

 concolori ad basin ut plurimum cincta ; ostiolo compresso, cristato, 

 setulis rectis obsita. Asci elongati, paraphysati, octospori. Sporidia 

 disticha, fusoidea, elongato-bilocularia, ad septum leniter constricta, 

 hyalina. The typical species, L. Viburni, was found on dead branches 

 of Viburnum Lantana. 



Polymorphism of the Hypocreaceae.||— Dr. O. Mattirolo has 

 examined the "mycorhiza" on the roots of the chestnut, and finds 



* Bot. Ztg., xliv. (1886) pp. 316-20. Cf. this Journal, v. (1885) p. 503. 

 t SB. K. Akad. Wiss. Wien, xci. (1885) pp. 166-202 (4 pis.). 

 X Ann. Jard. Bot. Buitenzorg, vi. pp. 1-51. See Bot. Ccntralhl., xxvi. (1886) 

 p. 130. 



§ Bull. Soe. Bot. France, xxxii. (1SS5) Sess. Extraord., pp. viii.-xii. 

 f| Nuov. Giorn. Bot. Ital., xviii. (1886) pp. 121-54 (2 pis.). 

 Ser. 2.— Vol. VI. 3 I 



