282 Pflanzenkrankheiten. — Bryophyten. — Floristik etc. 



Stewart, F. C, Witches brooms on hickory trees, (Phyto- 

 pathology. VII. p. 185—187. f. 1. June 1917.) 



Referring to the effects of Microstroma Juglandis on Carya ovata. 



Trelease. 



Taubenhaus, J. J., Pink root ofonions. (Science. N. S. IL. p. 

 217-218. Feb. 28, 1919.) 



The nomen nudum Fusarium malli is proposed for the causa- 

 tive organism. Trelease. 



Tisdale, N. H„ Physoderma disease of Corn. (Journ. Agr. Res. 

 XVI. 5. p. 137—154. With distribution map and pl. A, B, and 

 10-17. Feb. 3, 1919.) 



Referring to Physoderma Zeae-Maydis. Trelease. 



Weir, J. R. and E. E. Hubert. Notes on forest tree rusts« 

 (Phytopathologie. VIII. p. 114—118. Mar. 1918.) 



Referring to species of Peridermium, Calyptospora , and Melamp- 

 sora. Trelease. 



Williams, R. S., The Genus Desmatodon in North America. 

 (Bull. Torrey Bot. Club. XLVI. p. 207-220. pl. 11. June 1919.) 



Twelve species are differentiated. The following new names 

 appear: Desmatodon Sprengelii {Barbula Sprengelii Schwaegr.) and 

 D. stomatodontus {Hyophila stomatodonta Cardot). Trelease. 



Nakai, T., Trigonotis Japono-Coreanae. (Bot. Mag. Tokyo. 

 XXXI. p. 215-218. 1917.) 



A key to the determination of the species occurring in Japan 

 and Corea and an enumeration of species and varieties with notes 

 on synonymy and distribution and description of a new species. 



T. brevipes (Maxim.) Maxim., T. peduncularis (Trev.) Benth., 

 T. radicans (Turcz.) Maxim., T. Guilielmi A. Gray, T. Icumae (Maxim.) 

 Makino, T. coreana sp. nov., near T. myosotoidea and T. Icumae 

 (Insula Quelpaert, Corea, Russian Manshuria near Nikolsk). 



Jongmans. 



Ness, H., Hybrids of the live oak and overcupoak. (Journ. 

 of Heredity. IX. p. 263—268. f. 6—8. Oct. 1918.) 



Artificially produced hybrids of Quercus virginiana ($) and Q. 

 lyrata (g) , — constituting the same product as the spontaneous 

 hybrid X ö- Comptonae Sargent. A secondary cross with Q. stet- 

 lata (cf) appears to be indicated. Trelease. 



Nichols, G. E., The Vegetation of northern Cape Breton 

 Island, Nova Scotia. (Transactions Connecticut Acad. Arts & 

 Sc. XXII. p. 249-467. f. 1-70. June 1918.) 



In the analysis of the Vegetation the System of Classification 

 recently proposed by the same author is used. The deciduous 



