THE FERN BULLETIN 



41 



SALVINIACEAE. 



Azolla Carolinian a (Willd.) "Ponds from Hender- 

 son and Peoria counties southward. Infrequent/' 

 (P.) "Since 1857 not found again in the region of 

 our local flora." Brendel in Flora Peoriana. "In a 

 pond near South Chicago, 1886. So far as known 

 this is the only locality where this species has been 

 found within our limits." Higley and Raddin. 



EQUISETACEAE. 



Equisetum arvense (L.) Common from Kankakee 

 county north. Reported by Patterson as common 

 throughout the state. Though usually growing in 

 moist sand or gravel, it is often found in the Chi- 

 cago region in masses along dry railway embank- 

 ments. 



Equisetum palustre (L.) "Wet places, Peoria 

 county, Wolff, Brendel/' (P.) 



Equisetum fluviatile (L.) In shallow water or 

 very wet ground. Quite frequent about Chicago. 

 "Cass county, Mead; Peoria, Brendel; McHenry, 

 Vasey. Scarce. " (P.) Joliet, common, Ferriss. 



Equisetum laevigatum (A. Br.) Cook and Kan- 

 kakee counties." "In dry or moist clay or sand 

 from Henderson and Peoria counties southward." 

 (P.) In the Chicago region generally in moist 

 sands ; Hancock county, Mead. 



Equisetum hyemale (L.) Moist places, Cook, Will 

 and Lake counties. Frequent, as well as through- 

 out the state according to Patterson. 



Equisetum Ferrissii, (Clute.) Moist banks, Will 

 county. 



Equisetum robustum (A. Br.) On moist or wet 

 banks of streams. Thornton and La Grange, Cook 



