PREFACE. V 



Prof. George G. Groff of Bucknell University, Lewisburg, 

 Pa., Miss Anna A. Schryver of the Michigan State Normal 

 School, Ypsilanti, Mr. Hermann von Schrenk of the St. Louis 

 Manual Training School, and Mr. Marcus L. Glazer of the 

 St. Cloud., Minn., High School. 



Part II consists of a very brief key to some of the com- 

 moner orders of Phanerogams and descriptions of the char- 

 acteristics of these orders with a few genera and species 

 under each. The key is adapted (by permission) from the 

 one in use in the elementary course in botany in Harvard 

 University, and the descriptions were compiled by the author 

 from the most accessible recent floras of the northern United 

 States east of the hundredth parallel. The attempt has been 

 made to simplify the language and condense the descriptions, 

 but not so much as to make them hopelessly bald and unread- 

 able. The plants chosen to constitute this greatly abbreviated 

 flora are those which bloom during some part of the latter 

 half of the ordinary school year, and which have a rather wide 

 territorial range. Enough forms have been described to 

 afford ample drill in the determination of species. Gray's 

 Manual of Botany or Field, Forest and Garden Botany will of 

 course be employed by the student who wishes to become 

 familiar with the flora of the region here touched upon. 

 Those species which occur in the north-eastern United States 

 only as cultivated plants are so designated, but it has not 

 seemed best to take the necessary space to assign precise 

 ranges or habitats to the native or introduced plants here 

 described. 



