220 



Index to recent Literature 



Williams ? E. F. Bartonia iodandra, new to the United States. 



Rhodora, 2: 55-57.//. *5»f* J -7* Mh. 1900. 

 Williams, F. N. Critical Notes on some Species of Cerastium. 



■ 



Jour. Bot. 36: 341-344. S. 1898; 382-387. O. 1898; 37: 



1 16-124. Mr. 1899; 209-216. My. 1899; 3i°-3 I 5- 

 1899; 474-477. N. 1899. 



Jl. 



Williams, T. A. Poa Fendleriana and its Allies. Circ. U. S. Dept. 

 Agric. (Div. Agrost.) 10: i-6# 15 Ap. 1899. 



P. scabriuscula sp. nov. and several new varieties. 



Williams, T. A. The velvet-stemmed Collybia. Asa Gray Bull., 

 8 : 1. //. 1. F. 1900. 



1 



Woods, A. F. The Destruction of Chlorophyll by oxidizing En- 



zymes 



Centralb. fur Bakteriologie, 5 : 745-754 



1899. 



Woods, A. F. Cultivation of Algae in Aquaria. Jour. App. Micros., 



1 



193 



N. 1899. 



Worsdell, W. C. Observations on the vascular System of the fe- 

 male "Flowers" of Coniferae. Ann. Bot. 13: 527-548.//. 27. D. 

 1899. 



Zwaluwenburg, A. van, & Schlotterbeck. Developmental His- 

 tory of important Seeds. Pharm. Archives, 2 : 333-343. pi. 1, 2. 

 N. 1899. 



Studies on seeds of cotton and Tfieobroma. 



