Eumycetes. — Pflanzenkrankheiten. 613 



rence and cultivation of Pyronema. (Mycologia. I. p. 131 — 

 139. pl. 9—12. 1909.) 



A general discussion of pyrophilous fungi with especial refe- 

 rence to Pyronema omphalodes (Bull.) Fuekel. The writer describes 

 valuable methods of cultivation for study. This species can be grown 

 on nutrient media, producing sex organs six days after planting the 

 spores, and mature ascocarps four days later. R. J. Pool. 



Seaver, F. J., The Hypocreales of North America. II. 

 (Mycologia. I. p. 177-207. pl. 13. 1909.) 



This paper begins with Creonectrieae. Tribe II of the author. A 

 key is given for the following genera of this tribe: Sphaerostilbe , 

 Megalonectria, Allantonectria , Sphaerodermatella, Creonectria, Macbri- 

 della, Gibberella, Scoleconectria , Echinodothis, Thyronectria , and Thyro- 

 nectroidea. Keys to the species follow, and also descriptions of species 

 of the various genera. Sphaerodermatella is a new genus, as is Creo- 

 nectria, Macbridella, Scoleconectria, and Thyronectria. In all, fourty- 

 six species are described. R. J. Pool. 



Shear, C. L., Sphaerodothis, a new genus ofDothideaceous 

 Fungi. (Mycologia. I. p. 161 — 163. 1909.) 



The author has risen the sub-genus Sphaerodothis of Auerswal- 

 dia Sacc. & Syd. to generic rank, and has transferred to this genus 

 some of the closely related species. Five such new combinations 

 are noted, and a new species, Sphaerodothis Neowashingtoniae is 

 described. R. J. Pool. 



Sumstine, D. R., Four interesting species of Moulds. 

 (Mycologia. I. p. 218. 1909.) 



Brief notes are given concerning the following species: Mncor 

 rufescens, M. circinelloides , Pilobolus longipes and Circinella umbellata. 



R. J. Pool. 



i 



Heald, F. D., A species of Discosia on living Bull Pine seed- 

 lings (Mycologia. I. p. 215—217. pl. 14. 1909.)' 



A number of fungi are troublesome to the forest nurseryman. 

 Discosia pini, a new species, is here described as occuring upon 

 living seedlings of Piniis ponderosa from Halsey, Nebraska. 



R. J. Pool. 



Petri, L., Nodositätenbildung auf den Rebenwurzeln 

 durch die Reblaus in sterilisiertem Mittel. (Cbl. f. Bakt. 

 Abt. II. XXIV. p. 146. 1909.) 



Verf. hat in eigens hiezu konstruierten Apparaten unter völlig 

 sterilen Bedingungen an den Wurzeln junger Reben Nodositäten 

 durch die Reblaus erzeugen können. Es ist also die Gegenwart von 

 Organismen hiezu nicht notwendig. Auch konnten diese Nodositäten 

 fäulnisfrei gehalten werden. Schätzlein (Weinsberg). 



Schneider-Orelli, O., Die Miniergänge von Lyonetia clerkella 

 und die Stoffwanderung in Apfelblättern. (Cbl. f. Bakt. 

 II. Abt. XXIV. p. 158. 1909.) 



Der Verlauf der Miniergänge der Raupe von Lyonetia clerkella, 



