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,
