71 



same number of species in the two floras. The Liliaceae are, 

 as is well known, very strongly represented in the coast flora; 

 there are 24 genera and 175 species, as compared with only 15 

 genera and 40 species in the entire flora of the northeast. The 

 Orchidaceae, on the other hand, are much better represented in 

 the northeastern flora; there are only 13 western genera and 36 

 species, while there are 28 eastern genera and 66 species. 



In the few dicotyledonous families treated in this volume, 

 perhaps the most noteworthy features are the complete absence 

 of the genera Hicoria and Ulmus and the family Moraceae, and 

 the considerable development of the Loranthaceae. 



The similarity of treatment between the two illustrated floras 

 has already been commented upon. The most noteworthy 

 variations shown by the Abrams flora are: the transfer of the 

 two grass genera Sphenopholis and Koeleria from Festuceae to 

 Aveneae; the union of Trilliaceae with Convallariaceae ; and the 

 change in the order of arrangement of some of the families of 

 lower dicotyledons. 



For the most part the author seems to have succeeded very 

 well in following the principles of nomenclature adopted by him. 

 Only two exceptions have come to the notice of the reviewer. 

 One of these was intentional, but no adequate justification of it is 

 ofl'ered; this is the name of the famous Big Tree, which is called 

 "Sequoia gigantea (Lindl.) Decn.," although this binomial dates 

 from 1855, while the same name was given to the coast Redwood 

 by Endlicher in 1847, six years before the Big Tree was dis- 

 covered. The other exception was surely accidental, and seems 

 to have resulted from a typographical error in Britton and 

 Brown's flora; this is the use of the name " A plectrum spicatum 

 (Walt.) B.S.P.," although the synonym Arethusa spicata Walt. 

 certainly belongs to Hexalectris. 



More than three fifths of the text of this volume has been 

 contributed by specialists in various groups: Pteridophyta 

 (except Isoetaceae), Maxon; Isoetaceae, Pfeiffer; Poaceae, 

 Hitchcock; Cyperaceae (except Carex), Britton; Carex, Macken- 

 zie; Juncaceae, Coville; and Salix, Ball. In these days of 

 specialization, such co-operation is essential; it is to be hoped, 

 however, that in the two remaining volumes the author will 

 find more room for self-expression. — -John Hendley Barnhart. 



