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Theissen, F. 1912. Hymenomycetes Riograndenses. (Broteria. Ser. Bot. 



X. p. 5-28. 4 T.) 

 Thomas, H. E. 1918. Cultures of Aecidium tubulosum and A. passi- 



floriicola. (Phytopathology. VIII. p. 163—164.) 

 Wilson, G. W. 1918. Studies in North American Peronosporales. VII. 



New and noteworthy species. (Mycologia. X. p. 168 — 169.) 

 Yasuda, A. 1918. Eine neue Art von Trametes. (Bot. Mag. Tokyo. 



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 Zimmermann, H. 1918. Milbenbefallene Futtermittel als Ursache von 



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XII. Myxomycetes. 



Borzi, A. 1917. Studi sulle Mixoficee. (N. Giorn. bot. ital. N. S. XXIV. 



p. 65—112.) 

 Meylan, C. 1917. Contribution ä l'etude des Myxonrycetes du Jura. 



(Bull. Soc. vaudoise. Sc. nat. LI. p. 259-269.) 



XIII. Pflanzenkrankheiten. 

 Cf. II. tVöchting. 



Cayley, D. M. 1917. Bacterial disease of Pisum sativum. (Journ. agr. 



Sc. VIII. p. 461—478.) 

 Hedick, H. 1917. Beiträge zur deutschen Gallenfauna. I. Ein Beitrag 



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LXXVIII. p. 246-259.) 

 Nalepa, A. 1918. Eriophviden aus Java. II. Beitrag. (Verh. zool.-bot. 



Ges. Wien. LXVIII. p". 40-92.) 

 Nishimura, M. 1918. A carrier of the mosaic disease. (Bull. Torrey 



bot. Club. XLV. p. 219-233. 1 pl.) 

 Paine, S. G. 1917. "Blackleg" of the potato. (Journ. agr. Sc. VIII. 



p. 480—494.) 

 Porter, A. A. and G. W. Coons. 1918. Differences between the species 



of Tilletia on wheat. (Phytopathology. VIII. p. 106—113. 4 f.) 

 Ramsbottom, J. K. 1918. Investigations on the Narcissus disease. 



(Journ. r. hört. Soc. London. XLIII. p. 51—64. 12 pl.) 

 Rhoads, A. S. 1918. Some new or little known hosts for wood-des- 



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 Rosenbaum, J. and G. B. Ramsey. 1918. lnfluence of temperature and 



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 Salmon, E. S. 1914. Observations on the perithecial stage of the 



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 Salmon, E. S. 1917. On forms of the Hop (Humulus lupulus L.) 



resistant to mildew (Sphaerotheca humuli (DC) Burr.) (Journ. Agr. 



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 Sawada, K. 1918. A new rust-fungus parasitic on the cultivated rose. 



(Trans. Sapporo nat. Hist. Soc. VII. p. 36—40. ill. Japanese.) 

 Shear, C. L. 1918. Pathological aspects of the federal fruit and vege- 



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 Shimbo, I. 1918. Beiträge zur Kenntnis einiger einheimischen Pflan- 

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 Stahel, G. 1918. Ueber die Inflorescenzen von Theobroma cacaoLinn. 



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(Ann. Jard. bot. Buitenzorg. XXX. p. 95—114. 8 T.) 

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