Smith-—Algae Found in Wisconsin Lakes 
645 
Order CONJUGALES 
Family DESMIDIACEAE. 
Genus NETRIUM Nageli 1849; Liitkem. emend. 1902. 
Netrium digitus (Ehr.) Itzigs. u. Rothe. 
In Rabenhorst, Algen No. 508. 1856. W. & G. S. West, Monogr. of Brit. 
Desm. 1: 64. pi. 6, jigs. 14-16. 1904. 
I. Squirrel (rrr). 
Genus CLOSTERIUM Nitzsch 1817. 
Closterium aciculare var. subpronum (W. West) W. & G. 
S. West. 
Monogr. of Brit. Desm 1: 175. pi. 23, jigs. 4-5. 1904. 
Closterium suhpronum var. lacustre Lemmermann, Abh. Natw. Ver. 
Bremen 16: 344. pi. 1, figs. 13-14. 1899. 
The dimensions of the cells are those of C. subpronum var. 
lacustre Lemmermann but since the Wests state that Closterium 
subpronum var. lacustre should be relegated to this variety al¬ 
though the dimensions are a little larger, ’ ’ I have followed their 
practice. 
I. Green (r). 
Genus MICRASTERIAS C. A. Agardh 1827. 
Micrasterias pinnatifida (Ktz.) Ralfs. 
Brit. Desm. 77. pi. 10, figs 3a-3b. 1848. 
I. Kawaguesaga (rrr). 
Micrasterias truncata (Corda) de Breb. 
In Ralfs, Brit. Desm. 75. pi. 8, fig. 4; pi. 10, fig. 5. 1848. 
I. Soft (sss). 
III. Beaver dam (rr), Chetek (rrr). 
Micrasterias sol (Ehr.) Kiitzing. 
Species algarum 171. 1849; W. & G. S. West, Monogr. of Brit. Desm. 2: 
95. pi. 46, figs. 1-2, 1905. 
Micrasterias radiosa Ralfs non C. A. Agardh. Ralfs. Brit. Desm. 72. 
pi. 8, fig. 3. 1848. 
III. Beaver dam (rr). 
