132 REVIEWS. 



of in the present state of confusion into which that order has been 

 thrown by the excessive multiplication of genera, especially in the Bry- 

 onia group. Mitrosicyos, Maxim., belonging to the same order, is a very 

 distinct genus, of which two species are described. A third, however, 

 had been previously published in Griffith's "Notulae," under the name 

 of Actinostemma, which must prevail over Maximo wicz's Mitrosicyos. 



Eleutherococcus, Maxim., is well distinguished from Heeler a, with 

 which, following only the arrangement of the Araliacese of De Candolle 

 and Endlicher, it might have been technically, but improperly asso- 

 ciated. In the re-arrangement of the order sketched out by Decaisne 

 and Planchon in the " Revue Horticole" for 1854, with which Maxi- 

 niowicz was probably unacquainted, this plant would probably range 

 under Panax, sect. Acanthopanax. 



Symphylloca/rpus, Maxim., is a small composite weed, closely allied 

 to Myriogyne in character, and to Thespis in appearance, but separated 

 from both by a purely artificial character, the value of which we are 

 not able to judge of, not having seen any specimen. 



Syneilesis, Maxim., is also composite ; the genus is created for the 

 Cacalia aconitifolia, Bunge, which has the habit and general characters 

 of Cacalia, as limited by modern authors. Our specimens have no ripe 

 fruit ; and we are unable to say whether the remarkable union of the 

 two cotyledons by one edge is of sufficient constancy to separate it even 

 as an artificial genus. 



Pterygocalyx, Maxim., appears to us in nowise to differ as a genus 

 from Craivfurclia, although, as a species, it differs from all the other 

 known ones by the obtuse lobes of the corolla. 



Omphalotrix, Maxim, is distinguished from Odontites by characters 

 derived from the placenta and the size of the embryo, which appear to 

 us to be of very little importance. The habit is said to be very diffe- 

 rent ; but to our eyes it is not far from that of 0. lutea and 0. grana- 

 tensis, differing chiefly in the longer and more slender pedicles. 



M. Maximowicz's chapters on the area occupied by the principal 

 gregarious trees of Amurland, and on the cultivated and economic plants 

 of the country, are of high interest ; and on the latter subject, especially, 

 we should be glad to see more attention bestowed than is usual with 

 botanists resident for a time in little-known countries. We can also 

 highly commend the map, as giving, from the most authentic available 

 sources, the prominent physical features of the territory in a clear and 

 conspicuous form. 



