l88o.] BOTANICAL GAZETTE. Ill 



In the " Synopsis of Species " is found the same careful and discrimi- 

 nating work. Following Bentham and Hooker, Archangelica is merged 

 in Angelica, which contains sixteen species. Archangelica Gmelini DC- 

 of the northern coasts becomes Coslopleurum Gmelini Led. The Colorado 

 plant, so named, becomes Selinum Orayi, and this genus of seven species 

 also includes those specimens from the northwest formerly referred to 

 Conioselinum Fischeri, here divided between S. Benihami Wats, and S. 

 Hookeri Wats. Conioselinum is again restored for C. Canadense T. & G. 

 Tiedemannia is restored and includes Archemora, which thus disappears 

 from our flora; in this the author's views are doubtless correct, as they 

 are also in separating this genus (and Pastinaca) from Peucedanum, to 

 which Bentham and Hooker joined them. A new genus, Coloptera, is 

 formed by bringing together three species which have been variously re- 

 ferred to Cymopterus, Ferula and Leptotamia. To the last-named genus 

 are again referred the species removed to Ferula by Drs. Gray and Wat- 

 son, and this name also disappears. The dominating genus is Peuceda- 

 num, now increased to forty-three species, all belonging to the trans- 

 Mississippi region. Of these the authors have contributed fourteen. In 

 these nearly allied and somewhat difficult genera there is room for differ- 

 ence of opinion, but we apprehend that our authors have done very much 

 to settle the proper relations of the genera and species. Other interesting 



Pseuducyniopterus 



montanu 



niopsis for Tauschia Texana Gray; Harbouria instituted for Thaspium 

 trachypleurum Gray ; and Aides, also of a single species, which has a most 

 curious history, well illustrating the former confusion of the order. Ore- 

 ad* humilis Raf. takes the place of OymJptaru* alpinus Gray. B*h*tera 

 Nevadensis Watson is retained for Vymopteru* Nevnh ,>si* Gray. Eulophus 

 is taken to include Fodosciadium Gray. Our only native Bupleurum is 

 well separated from B. ranunculoides L. under the name of B. Amerx-a- 

 num. Vdtea DC. is again separated from Arraeacia and the species of 

 Deweya are merged in it, and the name which commemorated the labors 



of a worthy botanist is dropped. 



An admirable feature of this part of the work is to be found in the 

 clear diagnostic notes in which the authors give their reasons for the for- 

 mation of new genera or the re-arrangement of the species. 



The excellent figures of cross-sections of the fruit are placed at the 

 end of the work. There is also a good index, which is curiously inter- 

 posed between the " list of figures " and the figures them Ives. 



This work, the authors say, is the result of "some four years of unre- 

 mitting study." It has been time well spent for their own fame as well 

 as for the advantage of botanists at large. They have brought to their 

 work improved methods of study instead of relying wholly upon external 

 characters, and have thereby advanced the grade and standing of system- 

 atic botany.— Wm. M. Canby. 



