ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 89 



Stkaszer, Pius -Fiinfter Nachtrag zur Pilzflora des Sonntagberges. (Fifth 

 contribution to the fungus flora of the Sonntagberg.) 



[The present list includes about 300 species, several of them new.] 



Verh. ~k.lt. Zool. Bot. Gcs. Wien, lx. (1910) pp. 305-35. 



Selibeb, G. — Sur le virage du pigment de deux champignons. (On the changes 

 of colour in the pigment of two fungi.) 



[The fungi experimented with were Fusarium heidelbergianum (red) and 

 Cephalosporium subsessilc (violet). They changed their colours according 

 to the acid-alkaline culture medium.] 



Comptes Rendus, cl. (1910) pp. 1707-9. 

 Saktoey, A. — Etude biologique du Sterigmatocystis queroina. (Biological study 

 of Sterigmatocystis querdna.) 



[Results of culture experiments.] 



Bull. Soc. Mycol. France, xxiv. (1910) pp. 349-57 (4 figs.). 



S ydo w— Mycotheca Germanica. Fasc. xviii. xix. (Nos. 851-950). 



[List of the species, with diagnoses of a number new to science.] 



Arm. Mycol, viii. (1910) pp. 489-93. 



Torrend, C. — Premiere Contribution a l'etude des Champignons de Tile de Timor 

 (Oceanie). (First contribution to the study of the fungi of the Island of 

 Timor.) 



[The list includes several new species.] 



Brot. Ser. Bot., ix. (1910) pp. 83-91 (2 pis.). 

 See also Arm. Mycol., viii. (1910) p. 576. 



We st ling, R. — En ny Askusbildende Penicillium-art. (An ascus-forming 

 species of Penicittium.) 



[Penicillium baculatum, sp.n. formed on leaves, nearly allied to P. glaucum.] 



Svensk. Bot. Tidsskr., iv. (1910) pp. 139-45 (1 fig.). 

 See also Ann. Mycol., viii. (1910) pp. 576-7.) 



Lichens. 

 (By A. Lorrain Smith.) 



American Species of Stereocaulon.* — L. W. Riddle finds the 

 American species of Stereocaulon fall into two groups : one, with 

 &'. pasehale as the central species, is typical of northern regions : the 

 other group is tropical, and is represented by S ramulosum and its 

 allies. As a result of careful examination of a great mass of material, 

 Riddle has been able to draw up a key based on salient and persistent 

 species characters. Between 8. pasehale and S. tomentoswn he finds the 

 most constant feature of distinction in the cephalodia ; in the former 

 they contain Stigonema algse, in the latter Nostoc. These two species 

 are apt to be confused : the same character is used to distinguish between 

 S. denudation (with Stigonema) and 8. atpinum (with Nostoc). These 

 species are European as well as American. 



Cladonise.f-- Ij. W. Riddle has published a key to the species of 

 Cladonia in New England. The species in this genus are extremely 

 variable, and no key can be constructed, he tells us, that will serve for 

 the determination of all specimens. He adds a list of the species and 

 varieties with synonyms used in Tuckerman's Synopsis of Xorth 

 American Lichens. 



* Bot. Gaz., 1. (1910) pp. 285-304 (9 figs.), 

 t Bryologist, xiii. (1910) pp. 92-7. 



