Herposteiron 231 



/. 3. 1883. Wolle, F. W. Alg. 1 19. pi. 105. f. 8. 1887. Wille ; 

 Eng. & Prantl, Nat. Pflanz. I 2 : 95. /. 38. 1890. Klebahn, Jahrb. 

 wiss. Bot. 25: 294. pi. 14. f. 1-4. 1893. Huber, Bull. Soc. Bot. 

 France, 41 : XCIV-CIII. pi. 7. 1894. Klebs, Fortpflanz. Alg. 

 und Pilz. 404. pi. 3. /. iy-22. 1896. Chodat, Beitr. Krypt. Flor. 

 Schweiz, I 3 : 324-329./. 24.0-243. 1902. 



Aphanochaete confervicola Rabenh. Flor. Eur. Alg. 3: 391. 

 1868. 



Herposteiron repens Wittr. Bih. Svensk. Vet. Akad. Hand. I 1 : 

 27. 1872. 



Herposteiron Braunii Huber, ex Nag. MS. Ann. Sci. Nat. Bot. 

 /. c. De Wild. Flor. Alg. Belg. 38. 1896. 



Cells subglobose to nearly cylindrical ; setae usually solitary, 

 3-4 p. thick at the base, very slender above, often 160 fi long, 

 frequently absent or disappearing early (pi. 42, f. 5-7). 



Exsic: Tild. Am. Alg. 133, St. Paul, Minn., May, 1896. Phyc. 

 Bor. Am. 762, Wright's Pond, Middlesex Fells, Mass., 19 August 

 1900 (F. S. Collins). 



Epiphytic on various confervae, especially Oedogonium y usually 

 in quiet waters. 



Vermont: St. Johnsbury, July (688), October (648, 650), 

 November (668). 



Massachusetts : Middlesex Fells, Wright's Pond, 1 1 July 

 1900 (448) ; Peabody, 24 September 1890 (F. S. Collins). 



New York : Van Cortlandt Park, May (424). 



New Jersey : Greenwood Lake, Setember (467). 



Doubtful Form 



Aphanochaete vermiculoides Wolle, F. W. Alg. 119. pi. 103. 

 f. 0, 10. 1887. De Toni, Syll. Alg. I : 180. 1889. 



Exsic. : Phyc. Bor. Am. 161, Norwich, Conn. (W. A. Setchell). 



Wolle's description and figures of this species do not show its 

 right to be placed in this genus. No specimen could be found in 

 his herbarium, nor does the exsiccata quoted shed light on the 

 character of the form. 



Summary 



1. In the Ulothricaceae twenty-seven species and two formae 

 are recognized ; of these, three species and one forma are new to 



