Additions and Corrections, 



The following Linnean expressions may be 

 unfamiliar to the student. 



2Equalis: All the flowers hermaphrodite. 



Superflua: Flowers of the disk hermaphrodite, of the 

 ray female. 



Frustranea: Flowers of the disk hermaphrodite, of the 

 ray neutral. 



Necessaria: Flowers of the disk male 



Page 45. — 2: Aspemla. This was included on the state- 

 ment that a species which is occasionally cultivated, had 

 become naturalized in the vicinity. It has, however, since 

 been found to be a mistake. 



Page 76. — 3: after Alsine, insert (Arenaria, L.) 

 Page 92.— After Tricerastes, insert (Datisca, L.) 

 Page 100.— After Oreodaphne, insert {Umbellalaria, Nutt.) 



