﻿TABLE OF CONTENTS. 



Undescribed plants from Guatemala and other Central Ameri- 

 can republics. 'XXIV (with plate i) - - - John Donnell Smith 



PAGE 



Cultures of Uredineae in 1902 



J, C. A)'thur 10 



Experimental studies on inulase ------ Arthur L. Dea7i 24 



The distribution of the upland plant societies of Kent county, 



Michigan. Contributions from the Hull Botanical 

 Laboratory. XLIII (with map) - - Burton Edward Livingston 36 



Chemical stimulation and the evolution of carbon dioxid. 



Contributions from the Hull Botanical Laboratory. 

 XLIV (with two figures) - . - Edwin Bingham Copeland 81, 160 



w 



The genus Crataegus in Newcastle county, Delaware - - Charles S. Sargent 99 

 The Raveneliasof the United States and Mexico (with plates 



II and III) 



William H. Long. Jr. iii 



New or peculiar North American Hyphomycetes. IH. Con- 

 tributions from the Cryptogamic Laboratory of Har- 

 vard University. LIV (with plates iv and v) - - Roland Thaxter 153 



The embryogeny of Zamia. Contributions from the Hull 



Botanical Laboratory. XLV (with plates vi-viii) - 



Johfi M, Coulter and Charles J, Chamberlain 1 84 



Some talus Cladonia formations (with five illustrations) - Bruce Fink 195 



Oogenesis in Saprolegnia. Contributions from the Hull 



Botanical Laboratory. XLVI (with plates IX and x) 



Bradley Moore Davis 233, 320 



The behavior of the chromosomes in the spore mother-cells 



of higher plants, and the homology of the pollen and 



embryo-sac mother-cells (with plates xi-xiv) - - David M, Mottier 25a 



On the relationships of the nuclear membrane to the proto- 

 plast. Contributions from the Hull Botanical Labora- 

 tory. XLVTl (with plate xv) - - - - Ansfruther A. Lawson 305 



The Macchie of the Neapolitan Coast region (with four figures) /. F. Bergen 350, 416 



Crataegus in northeastern Illinois ... - - Charles S. Sargent 377 



Mitosis of the primary nucleus in Synchytrium decipiens 



(with plates xvi and xvii) Ergznh L. Stevens and Adeline C. Stevens 405 



Briefer Articles — 



Contributions to the biology of Rhizobia - - - Albert Schneider 56 



Chalazogamy in Carya olivaejormis (with one figure) 



Frederick H. Billings 134 



