232 
Beitriige zur Kenntniss der Gattung Tropeolum. ¥. Buchenau. 
(Engler’s Bot. Jahresb. xv. 180-259). 
Herr Buchenau recognizes forty-four species of this genus 
distributed from Central America to Chili, several of them here 
first described. 
Communicability of Peach Yellows and Peach Rosette—Adadi- 
tional Evidence on the. Erwin F. Smith. (U. S. Depart. 
Agric. Bull. No. 1. 1891, illustrated). 
Cross-Breeding and Hybridizing, with a Brief Bibliography of 
the Subject. L.H. Bailey. (The Rural Library, Vol. i. No. 
6, pp. 44). 
Cuphea viscosissima—Ueber die Epidermis der Samen von. C. 
Correns. (Ber. Deutsch. Bot. Gesell. x. 143-152, one plate). 
Current Methods in Botanical Instruction. Conway Macmillan. 
(Pamph. pp. 8). 
Flora Brasiliensis. Fasciculus CXI., Malvacee, Part I. 
This completes Vol. xii., Part III. The genera Malachra, 
Urera, Pavonia, Gethea, Malvaviscus, Hibiscus, Kosteletzkya, 
Cienfugosia and Gossypium are treated by Herr M. Giirke, and 
the geographical distribution and economic aspects of the Mal- 
vacee, by Dr. C. Schumann. The fascicle is illustrated by thir- 
ty-two plates. 
Flora of Central Arizona. J. W. Toumey. Bee Gaz. xvii. 162- 
164. 
Forms of Trees as Determined by Climatic Influences. Gustav 
Eisen. (Zoé, iii. 1- 12). 
Fungous Diseases of the Celery—Some. (New Jersey Ex. Sta. 
Bull. April, 1892). 
Illustrations are given by Dr. Halsted of Cercospora Apit, 
Phyllosticta Apit, Septoria Petroselini, var. A pit, and Puccinia 
bullata. 
® 
Germination of the T. eleutospores of Ravenelia cassiecola. B. M. 
Duggar. (Bot. Gaz. xvii. 144-148; two plates). 
Laboulbeniacee—Further Additions to the North American Spec 
zes of. Roland Thaxter. (Proc. Amer. Acad, Arts & Sci- 
ences xxvii. 29-45; reprint). 
