PUEFACE. IX 



occur in which the flowering season does not very definitely 

 fall within these limits; and there are some plants which 

 bloom continuously or successionaily. If a plant, therefore, 

 should not be readily identified amongst those set down for 

 the season in which it may be found in bloom, those of the 

 preceding or succeeding seasons should also be scrutinized. 



It is perhaps hardly necessary to add, that in using the 

 Summaries, care should be taken to compare correctly with 

 their correlatives the various terms and signs employed for 

 subdividing the groups. Thus in p. 22, Exogenous plants are 

 to be compared only with Endogenous plants (the words 

 will be found printed in the same type) in p. 27 ; Thalami- 

 flores, Calyciflores, Monopetals, and Monochlamyds, (also 

 printed in correspondent type,) must be compared with each 

 other ; and the * in p. 23 compared with ** in p. 24 : the 

 signs which fall between * and ** in like manner being 

 compared among themselves. The different signs are used for 

 the purpose of classification in the consecutive order which is 

 usual in printed books, namely, *, f, J, , ||, a, 1, etc. 



We should strongly recommend those who may take this 

 book as a guide in acquiring a knowledge of our Wild Flowers, 

 to gather as many of those which are figured as they may be 

 able to collect, and to compare them closely both with the 

 figures and with the lengthened descriptions, which latter will 

 be found under the head " Illustrations," at pp. 1, 78, 348, 

 and 386. They should especially separate the parts of the 



