390 BIBLIOGRAPHY. 



gives the name of Ditiola mucida. He calls attention to the con- 

 flicting accounts given by mycologists of the fructification of 

 Ditiola, and inclines to Bail's opinion that the genus is really 

 ascigerous. The first paper also contains some observations upon 

 the structure of Dacrymyces stillatus, tending to show that a true 

 hymenial layer sometimes exists in that plant. 



The second paper relates to the Sclerotium of Agaricus tube- 

 rosus Bull, and to the fungus produced by it. The author con- 

 siders that the Sclerotium and the Agaric have each a special 

 individuality, and that they stand to each other in the same 

 relation as Hydnum auriscalpium does to the fir-cones upon 

 which it grows. He observes that the Agaric when withered 

 revives in water, and that therefore it is rather a Marasmius than 

 a Collybia, notwithstanding the nature of its stem. This latter 

 paper also contains an account of an Agaric supposed to be a 

 variety of Agaricus horizontals Bull. It is described at length 

 and well-figured. It has cinnamon spores, and would belong to 

 the series Derminus, but its consistence is that of a Marasmius. 

 This leads the author to suggest that it might be advisable to 

 extend the genus Marasmius, so as to include all central stemmed 

 persistent Agaricini, whether the spores be white or coloured. 

 The writer is in error in supposing that Agaricus horizontalis has 

 not been observed since the time of Bulliard. It occurs occa- 

 sionally (although rarely) upon elm-trees in this country. (See 



B. and Br. Notices of British Fungi, No. 391, and Berkeley's Out- 

 lines of Fungology.) 



Niessl. — Zweiter Beitrag zur Pilzflora von Nieder-Oesterreich von 



G-. v. Niessl. Vien. Z. B. V. Band ix. p. 177. 

 Pasteur, L. — Recherches sur le mode de nutrition des Mucedinees. 



C. rend. LI. p. 709, 



Rabekhorst. — Fungi Europsei exsiccati (Klotzschii herbarii vivi my- 



cologici continuatio) . Editio nova, series secunda. Centuria ii. 



Cura Dr. L. Babenhorst. Dresd. MDCCCLX. Typis Caroli 



Heinrich, 4. 



The species published in this century are set out in Botanische 



Zeitung, 11 Mai, 1860. 

 Ravekel, H. W.— Fungi Caroliniani exsiccati: Fungi of Carolina 



illustrated by natural specimens of the species. Fasc. i. — v. 

 Richter. — Commentatio de favo ejuscuie fungo. Dissert, inaug. 



pathol. bot. quain cons. grat. medicor. ord. in univers. Yiadrina d. 



xxiii. m. Junii, etc.,publ. def. auctor Bert'.ioldus Richter, Silesius, 



etc. Adjectse sunt tabulae duse lithographicse. Yratislavias typ. 



Boehmeri et Minuthii. 8, 63, s. 

 Tulasne. — De Quelques Spherics fongicoles a propos d'un memoire 



de m. Antoine de Bary sur les Nyctalis par MM. Tulasue. Ann. 



des Sc. Nat. T. xiii. (Botanique), p. 6. 4 ser. 



This paper is noticed at some length in the review of Mr. 



Berkeley's work (sup. p. 12). In addition to the matter there 



referred to, it contains a monograph of the genus Hypomyces, 



