172 MORPHOLOGY AND TAXONOMY [Bot. Absts., Vol. IV, 



Fuckel is the same fungus. Appended to the paper is a complete alphabetical list of all the 

 fungi mentioned. — H. M. Fitzpatrick. 



1113. Holden, M. S. A scheme suggested for the investigation of marine bacteria. Jour. 

 Marine Biol. Assoc. United Kingdom 12:136-140. 1919.— Briefly suggests methods for 

 studying marine bacteria in cultures of blood-glucose-agar, trypsin-agar, trypsin-broth, and 

 on slides prepared therefrom, using silver nitrate, etc. as staining agents. — G. J. Peirce. 



1114. Jahn, E. Myxomycetenstudien. [Myxomycete studies.] Ber. Deutsch. Bot. Ges. 

 36: 660-669. 1918. — The paper contains notes on the occurrence and morphological features 

 of the following rare forms: Ceratiomyxa caesia sp. n., Badhamia versicolor Lister, Badhamia 

 decipiens Berkeley, Badhamia ovispora Raciborski, Physarum straminipes Lister, Physarum 

 sulfureum Alb. and Schw., Didymium tubulatum sp. n., Didymium Trochus Lister, Lepto- 

 derma iridescens G. Lister, Licea singularis sp. n., Liceopsis lobata Torrend, Hemitrichia 

 Karstenii Lister, Perichaena pedata Lister ? — Ernst Artschwager. 



1115. Kaxjffman, C. H. The Agaricaceae of Michigan. Michigan Geol. Biol. Survey 

 Publ. 26 (Biol. Ser. 5) : Vol. 2, 10 p. PI. 1-172. 1918— Excellent heliotype plates from pho- 

 tographs by the author.— See Bot. Absts. 2, Entry &27.—E. A. Bessey. 



1116. King, A. M. Notes on the genus Balansia. South African Jour. Sci. 15: 670-673. 

 PI. 25, fig. 1-4. 1919. — A disease of the grass Cynodon dactylon is common near Pretoria. 

 The affected plants are pale yellowish green and produce abnormal, long, erect shoots with 

 short internodes and poorly developed leaves. The sclerotia of the causal fungus develop 

 in the axils of the leaves, the asci and spores developing in December; the fungus belongs to 

 the genus Balansia and is probably an undescribed species. — E. M. Doidge. 



1117. Klebahn, H. Aus der Biologie der Ascomyceten. (The biology of the Ascomy- 

 cetes.) Ber. Deutsch. Bot. Ges. 36: 47-62. Fig. 1-7. 1919.— The paper contains a general 

 discussion of biological factors of various ascomycetes: ejection of ascospores, types of 

 beaks of perithecia, relationship between the various conidial and ascogenous stages of forms 

 such as Gnomonia, Gloeosporium, Mycosphaerella; parasitism; biological species among sapro- 

 phytes and parasites. The author suggests that in the case of the form-genus Entomo- 

 sporium the ascogenous stage should fall into a new genus "Entomopeziza" because of its 

 peculiar conidia. The various conidal forms developed during the winter and known as 

 Fusicoccum and Sporonema may be considered as adaptations to the host and climatic con- 

 ditions only. Biological forms are developed by Pseudopeziza ribis, but in this case the 

 forms are also distinguished by slight morphological differences. It is suggested that bio- 

 logical forms may also be developed among saprophytes. Mycosphaerella punctiformis, 

 growing on Tilia, Quercus and Corylus show slight differences in pure culture; it is conceivable 

 that the fungus may show preference to a certain substratum and, for example, may grow 

 better on oak leaves than on the leaves of the linden. — Ernst Artschwager. 



1118. Konrad, P. Notes et observations concernant le Tricholoma tigrinum Sch. = T. 

 pardinum Q. [Remarks on Tricholoma tigrinum Sch. = T. pardinum Q.] Bull. Trimest. Soc. 

 Mycolog. France 35: 143-146. PI. 7. 1919.— In the discussion of Tricholoma tigrinum the 

 author gives a detailed description of the fungus, its geographical distribution, and further- 

 more states that the fungus is oftentimes confused with several species of the group Tricho- 

 loma terreum: which are edible; while Tricholoma tigrinum is poisonous. — Fred C. Wcrkenthin. 



1119. Lakon. [Rev. of: Ludi, Werner. Puccinia petasiti-pulchellae nov. spec. Cen- 

 tralbl. Bakt. II Abt. 48:76-88. 2 fig. 1917.] Zeitschr. Pflanzenkrankh. 29:63. 1919.— 

 Haploid phase on Petasites niveus, P. albus, and P. hybridus (pyenia and aecia). Diploid 

 phase on Fcstuca pulchella (uredo). Poa alpina and P. nemoralis are also hosts. Puccinia 

 petasiti-pulchellae is biologically not identical with P. poarum. The aecia of P. poarum do 

 not affect Festuca pulchella. Detailed description and Latin diagnosis. — H. T. Giissow. 



