BOTANY. 749 



Concerning vegetable oxidizing ferments, especially in Phytolacca decan- 

 dra, E. Sciiak (Fcsisclir. X<iiiirf. <lcs. Zurich, ISO'',, II, i)p. :3,!:1-:j'j3). 



The method of attachment and host plants for mistletoe, M.'vunki, {Forstl. 

 natunc. Zlschr., {1SD7), Xo. ~; pp. CO-i;.], pi. 1). 



Sclerotinia heteroica, M. Wouoxix and S. Nawasciiix (Ziichr. I'jlanzvnkrank., 6 

 (ISDO), Xo. 4, pp. 199-^117, pL 1). — This is tho coiicludiuji paiier of tlie authors' study 

 of this fuugus. 



Culture experiments -with heteroecious rust fungi, V, H. Klkijaiix (Ztschr. 

 Pflanzcnhrunl:, G {1S96), Xo. 6, pp. 324-33S) .—T^xs. is the concluding number of the 

 report for 1890 of investigations on heterofcism. 



Concerning the origin and physiological relations of the root tubercles of 

 legumes, L. Hiltneu {Forstl. naturw. Ztschr., G (1897), Xo. l,pp. ,23-3G). — A r6snm6 

 of our knowledge relative to the fnuctiou of the root tubercles of legumes. 



Concerning parasymbiosis, W. Zopf (Ber. dent. hot. Ges., 15 {1S97), Xo. I, pp. 

 90-92). 



Variation and environment, C. T. Druhy {(lard. Chron., ser. 3, 21 {1S97), Xo. 531, 

 pp. 133,134). 



Native and introduced species of the genera Hordeum and Agropyrum, F. 

 Lamsox-Scribxek and J. G. Smith {V. S. Dept. Agr., Dirision of Agrostology Bui. 4, 

 pp. 23-36). — ReA'isions are given of the genera Hordeum and Agropyrum as repre- 

 sented in the United States. Ten species of Hordeum, one of which, II. horeale, is 

 new, are known to occur in the United States. In the revision of the genus Agropy- 

 rum the authors recognize 23 species and numerous varieties, of which 10 species and 

 14 varieties are new. The new species described are Agropyrum raseyi, A. arizonicum, 

 A. parishii, A. gmelini, A. ietrastachys, A. albicans, A. spicatum, A. lanceolatum, A. 

 pseudorepens, and A. riparium. 



Some American Panicums in the Herbarium Berolinense and in the herba- 

 rium of 'Willdenow, T. Hoi.M ( U. S. Dept. Agr., Dirision of Agrostology Bui. 4, pp. 

 17-23, Jigs. 9). — A report is given on certain species of Panicums in the Berlin and 

 Willdenow herbariums based on a study made by the author in 1894. 



Some Mexican grasses collected by E. W. Nelson in Mexico, 1894-'95, F. 

 Lamsox-Scribner and J. (i. Sjiith {F. S. Dept. Agr., Divisiou of Agrostology Bui. 4, 

 pp. 11-lG, pi. 1, figs. 2). — A list of species, descriptions of new species, and various 

 critical notes on the distribution and economic value of difterent grasses represented 

 in this collection are given. 



A list of the grasses collected by E. Palmer in the vicinity of Acapulco, 

 Mexico, 1894-'95, F. Lamson-Scribner ( U. 8. Dept. Agr., Dirision of Agrostology 

 Bui. 4, pp. 7-11, figs. 4). — A list of species is given, together with statements relative 

 to the habitat, distribution, and economic value of grasses in the collection of Edward 

 Palmer. A new genus, Fourniera, is figured and described. 



Mississippi fungi, S. M. Tracy and F. S. Earle {Mississippi Sta. Bui. 38, pp. 136- 

 75-5).— This bulletin is a continuatiou of Bulletin 34 of the station and contains 

 additional fungi which have been observed since the date of publication of that bul- 

 letin. Since the publication of the previous report, 85 species, 21 of which are new, 

 have been added to the list, making the total number given in the two lists 133 

 genera and 433 species. No attempt has been made to enumerate the (leshy fungi, 

 and many other important groups have received but slight attention. In the present 

 bulletin several species arc described for the first time. 



Flowering plants and ferns, J. C. Willis {The Macmillan Co.,Xcw Tori-, 1897,2 

 rols.,2>p. IX, 224, and XIII, 429, figs. 23).— This work presents in a convenient form a 

 summary of useful and scientific information about the plants met with in the botanic 

 garden, museum, or field. It treats of morphology, classification, distribution, nat- 

 ural history, economic botany, etc., giving such information as is usually reiinired 

 which does not need the use of a compound microscope for its study. The principal 

 part of the book consists of a dictionary iu which all the families and tho more 



