NOTICES OF BOOKS. 249 
all Germany,*: and the — coming from so great an authority 
ossess an addition 
on this particular group, p onal value from the non-exis- 
tence of a complete mo ph e = uction deals with the geo- 
graphical distribution, &c., and a cl account of the morphology 
is adde e following table Sthiateaken the i arrangement 
employed by Prof. Braun in this work. 
Systematic iste 
of the Families, Genera, and Species of the Characee. 
I Family : Nrretiez. 
ELLA. 
A. Monarthrodactyle (furcate). 
a, dicece. 
a. gloeocarpe. 1. LV. syncarpa, 
2. NV. capitata. 
8B. gymnocarpe. 3. VV. opaca. 
b. moneece. 
gymnocarpe. 4. NV. flexilis. 
B. Diarthrodactylae (flabellata). 
a. gymnocarpe. 5. NV. mucronata. 
: oe * N. flabellata. 
6. J. 11) 
7. WV. tenuissii 
B. gleocarpe. (XN. batrachosperma. ) 
2. ToLYPELLA. 
omnes monece. (7. prolifera.) 
: 8. T. intricata. 
II chil CHARER. 
. LycHNoTHAMNTS. 
species monceca.” (ZL. barbatus.) 
4. CHara. 
A. Astephane (ecorticata). 
ies diceca, 9. Ch. stelligers. 
B. Haplostephane. 
a. ecorticate. 
moncecee. (Ch. coronata.) 
6. gymnophylle. 
monece. 
C. Diplostephane (corticate.) 
a. isostiche 
sp. diceca. (Ch. crinita.) 
6, diplostiche. 
a. tylacan 
(Ch. scoparia.) 
tt monacee. 10. Ch. 
* In the table the species not yet known to occur in Silesia are enclosed 
in brackets. ‘ 
