844 EXPERIMENT STATION RECORD. ;v,,)40 



A check list of Porto Rican fungi and a host index, J. A. Stevenson (four. 

 Dept. Agr. P. R., 2 (1918), No. 8, pp. 125-261, ) .— This list, regarded by the author 

 as a starting point for more intensive work rather than as a complete enumera- 

 tion of Porto Rican fungi, is intended to include all fungi known or reported 

 to occur in the island with their host plants. A brief history of the work of 

 collectors on the island is given. The data herein recorded include the locality 

 where each fungus is found and appropriate bibliographical citations. No 

 attempt is made at a critical study of the species listed. 



Plant quarantine [as related to plant diseases and injurious animals], J. A. 

 Stevenson (Rev. Agr. Puerto Rico, 1 (1918), No. 1,, PP- 176-180). — A discussion 

 of protective action against the transmission of pests and diseases of plants 

 includes the illustrative mention of the fungi Marasmius, Melanconium, Col- 

 letotrichum. and Cytospora as causing disease of sugar cane in Porto Rico. 



Disease in plants with special reference to fungi parasitic on crops in 

 British Guiana, C. K. Bancroft (Jour. Bd. Agr. Brit. Guiana, 11 (1918), No. 1, 

 pp. 47-57). — The present article, the first of a series, gives a list of diseases of 

 plants occurring in British Guiana which have been attributed to definite causes 

 and which have engaged the attention of the author during a period of four 

 years. 



An epitome of bacterial diseases of plants in Great Britain and Ireland, 

 S. G. Paine (Ann. Appl Biol.. 5 (1918), No. 1, pp. 62-76).— This is an attempt to 

 bring together the principal known facts regarding bacterial disease! ol plants 

 in the British Isles, these including a white or soft rot (Bacillus carotoiorus) 

 of various crucifers and other vegetables, soft rot or heart rot of celery, als.. 

 due to 11. carotOV&rus, blackleg {B. atroteptioiu) of the potato, brown rot of 

 potato and tomato, iris rot i a. omnivorut and PsevdomofUM spp.)i yellow dis- 

 ease (P. hyacinthi) of hyacinth, black rot (j\ osMjsestrte) of cabbage and nearly 

 all other cruciferous plains, baeterial blight of fruit blossoms and of tomatoes, 

 leaf spot disease of orchid, bacterial disease (]'. tesiimtm) of Pisum sativum, 

 potato scab (Actinomyces > hromogenus), crown gall, and a few diseases of 

 undetermined causation, such as potato leaf roll and sprain, tomato mosaic, and 

 plum silver leaf. 



Diseases of plants and their treatment, B. T. P. Barker (.tour. Hath and 

 West and South. Counties fioc, ■',. st,„ 12 {1917-18), pp. 1S'.)-198).— The author 

 states that most of the Inquiries under this head directed to the Institute were 

 concerned with potatoes, considerable confusion being apparent as between late 

 blight and potato rust, the hitter being severe in certain districts In 1816 and 

 1917. No specific organism has been established as the cause. Home-grown 

 seed, a dry spring, and an early summer appear to be conditions favorable to 

 the development of the trouble. 



Inquiries made regarding fungus diseases considered as worthy of mention 

 related to tomato collar rot and a root disease of belladonna, each due to a 

 species of Phytophthora, a bacterial disease of plum trees, a disease of alder 

 wood due to Fotnes inniarius and Polpporus sulphurcus. and a glassy condition 

 of potatoes probably associated with rust. Special investigations undertaken as 

 a result of inquiries dealt with Rhizoctonia of asparagus, apple leaf scorch and 

 fruit spot disease, and tomato collar rot. 



Diseases new or little known in France, G. Arnaud (ilin. Apr. [France], 

 Ann. Serr. Ppiphutics, 1, (1915), pp. 1,9-70, figs. 12).— This is a discussion of 

 mildew of cereals. Cytisus, and Buddlela; crown gall of alfalfa; Scctriclla 

 miltina on Agave; Oibberella sp. on Sophora : Botryti* oinerea on peony; and 

 root gummosis of beet Bibliographies of these d i seases are given. 



