122 ERYTHEA. 



Deutsch Botanische Monatschrift, CEderreichische Botanische Leits- 

 chrift, etc., have long done so admirably lor the European regions 

 they cover. In the present enthusiasm for histology, cytology, oecol- 

 ogy, and vegetable physiology, it is not uncommon for a botanical 

 student to plunge into structural problems of extreme technicality 

 without adequate systematic training to give him a proper sense of 

 proportion in his work. To know well the different groups of some 

 one local flora is not only in itself a great source of pleasure, but is 

 a most excellent preparation for subsequent histological or physi- 

 ological study. There is, furthermore, a great deal still to do upon 

 the systematic botany of New England. Some of the most common 

 species of plants are proving themselves to be puzzling aggregates 

 of closely-related forms, each of which must be studied separately 

 before its proper status and exact distribution can be learned. The 

 flora is constantly changing, through the extermination of species 

 in certain localities, and the still more common introduction of plants 

 of the Old World. There are many reasons why these changes 

 should be carefully watched and duly recorded. Papers dealing 

 with these matters, however, are chiefly of local interest, and lose 

 much of their instructive power and significance if published in a 

 journal remote from the field they cover." 



The Experiment Station literature concerning weeds is perennial. 

 Rarely does any of it deserve special notice, but Prof. A. S. Hitch- 

 cock, of the Kansas Agricultural College, has taken up a some- 

 what neglected phase of the weed subject, and devotes Bulletin No. 

 76 of the Manhattan Experiment Station, to a study of vegetative 

 propagation in the perennial weeds of Kansas. The drawings form 

 a feature of the report, the characteristic underground, or creeping 

 organs, of each species being well illustrated. 



Professor Tourney, of the Arizona Agricultural Experiment Station, 

 has written "Something about Weeds," listing fifty species in Bul- 

 letin No. 22. Of these fifty, regarded as weeds, it is suggestive that 

 only eleven are introduced in Arizona, the remainder being native 

 plants, which find places more to their liking in cultivated fields. 



Those who are interested in the travels of plants, should know 

 that another American species has turned emigrant; Argemone 



