24 REVIEWS. 



nila, Pycnanthemura (the whole seventeen species), an anom- 

 alous Satureia QS. rigida, Barti'.), three species of Microme- 

 ria ; while to Calamintha is now referred the former M. gla- 

 hella and M. Nuttallii., as well as the Gardoquia Ilookeri, 

 Benth., with the new C. canescenSy Torr and Gr., MSS., and 

 C Caroliniana, Sweet (Thymus, Michx.) ; also two species 

 of Diceraudra (of which D. densijlora is a new one from 

 Florida) ; the California Pogogyne ; Hedeoma, including 

 IT. ciliata (^Keithia ciliata, Benth., Lab.) ; and Collinsonia, 

 of which six species are recognized. 



Of the tribe Monardece we possess a small portion of the 

 vast genus Salvia, which is increased to 407 species ; Audi- 

 bertia of California, of six species ; Monarda, of six species 

 (3/. didyma and 31. Jistidosa being retained nearly as in the 

 earlier monograph) ; and Blephilia, of two species. 



The tribe Nepeteoi affords us Lophanthus ; a single Dra- 

 cocephalum ; and a Cedronella. 



The tribe Stachydece furnishes Prunella, for which Al- 

 phonse De CandoUe restores, with satisfactory reasons given, 

 the orthography, Brunella; Scutellaria, of eighty-six species, 

 sixteen of them North American ; Physostegia, of which two 

 species are admitted ; Brazoria, Engelm. — Gray (in which 

 the synonym " Physostegia truncata, Hook., Botanical !Maga- 

 zine, t. 3494," should be cited under B. scuteUarioides, as 

 shown in Chlor. Bor.-Araer., and not under B. truncatci) ; 

 Macbridea and Synandra, each of a single species; and 

 Stachys (from which Betonica is now excluded), of 1G8 

 species. 



The tribe Prasica belongs entirely to the Old World and to 

 the Sandwich Islands ; and the tribe Prostanthereoi is exclu- 

 sively Australian. 



Of the Ajugece we have Isanthus, Trichostemma (In which 

 a corrected view is taken of the inflorescence of the typical 

 section), and Teucrium. 



The small order, Selaginacece, contributed by Professor 

 Choisy of Geneva, consists of eight almost exclusively South 

 African genera, to which the sub-arctic genus Gymnandra is 

 doubtfully appended. Of three Siberian species of this genus 



