548 EXPERIMENT STATION RECORD. [Vol.36 



are Ribes cynoshati, R. hirtellnm (or R. oxyacanthoides) , R. prostratum {R. 

 ylanclulosum) , R. americanum (R. floriclum), R. triste, R. lacustre, and R. 

 rotundifolium. Maps are given to show the approximate range of each of 

 these species in the Northeastern States and neighboring parts of Canada. 

 Otiier native species are said to occur elsewhere, 70 out of a total of 120 species 

 and subspecies being found in the United States, generally in the neighborhood 

 of the five-leaved pines. 



[The white pine blister rust situation], P. Spauldinq (Amer, Forestry, 22 

 {1916), Nos. 266, pp. 97, 98, fig. 1; 267, pp. 137, 138, fig. i).— This information has 

 already been noted (E. S. R., 35, p. 551). 



White pines of Lenox menaced (Amer. Forestry, 22 (1916), No. 272, pp. 472, 

 478, fig. 1). — This is a brief account of the appearance, spread, and effects of 

 blister rust among the noted white pines of Lenox, Mass., and of efforts now 

 being made for control of the disease. In May and June of 1916 it was found 

 to have attacked many white pines of all sizes and ages in this region, some 

 trees having branches infected 60 or 70 ft. above the ground. Late in May 

 the early summer stages of the blister rust appeared on currant and gooseberry 

 leaves and the late summer form, which infects pine trees in the fall, was 

 found late in June. 



Conditions near Ipswich, Mass., have shown that there is no hope for the 

 white pine trees that have been long exposed to the infecting spores from 

 neighboring currant and gooseberry bushes. 



Endothia parasitica and related species, C. L. Sheak, N. E. Stevens, and 

 Ruby J. Tiller (V. S. Dept. Agr. Bui. 380 {1917), pp. 82, pis. 23, figs. 5).— This 

 bulletin gives an account of the taxonomy, morphology and development, and 

 physiology of E. parasitica, the cause of the chestnut canker, an! related species 

 of the organism. To determine the specific identity of the oi■.^anism, a study 

 was made of all authentic specimens of all the species of Endothia obtainable. 



According to the authors, the genus is divided into two sections based on 

 the character of the ascospores. The first section contains two species, E. 

 gyrosa and E. singuhijis, while the second section contains four species and one 

 varietj^ E. fluens, E. lluens mississippiensis, E. longirostris, E. tropicaUs, and 

 E. parasitica. The host plants of the different species are mentioned, and E. 

 parasitica, which is the only species thus far found to be actively parasitic, 

 is reported to occur on Acer, Carya, Castanea, Quercus, and Rhus, but is known 

 to be seriously parasitic only on Castanea. The oriental species of chestnut are 

 said to be more or le.ss resistant to the attack of this parasite. 



A list of citetl literature is appended. 



Notes on some South African mistletoes and their hosts, R. Marloth and 

 I. L. Drege (.Sfo. African Jour. Sci., 11 {1915), No. 10, pp. 402, 403, pi. 1; abs. 

 in Internat. Inst. Agr. [Rome'\, Intemat. Rev. Sci. and Pract. Agr., 7 {1916), 

 No. 1, pp. 159, 160). — The genus Viscum, comprising about 00 species in various 

 parts of the world, is said to be represented in South Africa by about 12 species. 

 Among those which inhabit several hosts are V. capcnse, the most widely dis- 

 tributed species, V. rotundifolium, V. obscurum, and V. crassulw. 



V. minimum has been found only on Euphorbia polygona and only near Port 

 Elizabeth. This plant is described as mainly an internal parasite, analogous 

 in some respects to the fungi Plasmopara viticola on grape and Perono^ora 

 infestans on potato. It is said to require about two years to produce its first 

 flowers, the fruit being much larger than the remaining portion of the plant 

 exposed to view. 



Some studies on Bordeaux mixture, B. F. Lutman {Vermont Sta. Bui. 196 

 {1916), pp. 3-80, pis. 4. figs. 11). — The author gives the results of extensive 

 studies on the fungicidal and physiological relations of Bordeaux mixture, 



