1893.] Current Literature. 113 
three are of the number described in the monograph, but representa- 
tions of eleven of Spruce’s new species are lacking. Of the fifteen 
species remaining, seven are now issued as new species, while the other 
tight represent species previously described by others. 
The present work is a crowning effort of a busy life now turning 
Seventy-five years. Long may its author be spared to complete other 
problems in the systematic study of his favorite group of plants. 
L. M. 
Two monographs on Characee. 
Within a very short time of each other there have come to our table 
the first fascicle of each of two monographs dealing with the Characez 
of widely separated localities, namely, America and Australasia; the 
one by Dr. T. F. Allen, of New York City, the other by Otto Nord- 
Stedt, of the University of Lund, Sweden. 
The first part of Dr. 
4s “ photogravures ” ) 
half or full size, while 
of single plants and d 
the plates are no 
angement of matter make it easier for the eye to 
: For instance: in one place the list of 
ies: in one plac, d, in another they are flush with the name of spe- 
place we have « NITELLA Ostusa, Spec. nov.,” in another 
+ and in a third NireLLa MissouRIEN- 
occurs a list of “ LocauitiEs,” while in 
der ass, 
— they are embodied in the general text with no heading. 
Altey, Timorny 
me. PP. 8, pl. 14, fy The Characee of America, part II, fascicle 1. Roy. 
Ph a he author : New York. $1.00, 
PP. 24, Bl. 10 Feaustralasian Characez described and figured. Part 1. 
' *nediander & Sohn: Berlin, 1891. 7 shillings. 
