PREFACE. Vv 
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. 
