114 UNIVERSITY OF COLORADO STUDIES 



S. obliquus var. dimorphus (Turp.) Hansgirg. [Collins, Green Alg. of N.A., p. 169.] 



University Lake, Boulder, June 9, 1908, Dodds (D213); East Lake, July 4, 1908, 

 Dodds (D238). 

 S. quadricauda (Turp.) Brebisson, Forma typicus Kirchner. [Collins, Green Alg. of 



N.A., p. 169.] 



Gaynor Lake, September 15, 1907, Ramaley (21); University Lake, Boulder, July 18, 

 1908, Dodds (D248); Reservoir No. 1, near La Junta, July 28, 1908, Dodds (D277); 

 Redrock Lake, August 18, 1908, Ramaley (1); University Lake, Boulder, March 24, 1910, 

 Robbins (23). 

 Kirchneriella lunaris (Kirchner) Moebius. [Collins, Green Alg. of N.A., p. 171.] 



Teller Pool, July 4, 1908, Dodds (D244). 

 Coelastrum sphaericum Naegeli. [Collins, Green Alg. of N.A., p. 172.] 



Hiram Prince Lake, July ir, 1908, Dodds (D252). 

 Dictyosphaerium pulchellum Wood. [Collins, Green Alg. of N.A., p. 174.] 



Redrock Lake, August 18, 1908, Ramaley (1). 



Family HYDRODICTYACEAE 



Pediastram boryanum (Turp.) Meneghini. [Collins, Green Alg. of N.A., p. 177.] 



Hiram Prince Lake, July n, 1908, Dodds (D252); Chicago Lake, August 21, 1908, 

 Dodds (D349); East Lake, near Tolland, July 1, 1910, Robbins; Tolland, July 19, 1910, 

 Goldsworthy. 

 P. duplex Meyen. [Collins, Green Alg. of N.A., p. 179.] 



University Lake, Boulder, July 6, 1908, Dodds (D248); Hiram Prince Lake, July n, 

 1908, Dodds (D252). 

 P. duplex var. clathratum A. Braun. [Collins, Green Alg. of N.A., p. 179.] 



Semper Lake, July 13, 1908, Dodds (D258); Reservoir No. 1, near La Junta, July 28, 

 1908, Dodds (D277). 

 P. tetras (Ehrenberg) Ralfs. [Collins, Green Alg. of N.A., p. 179.] 



South Lily Lake, August 19, 1908, Dodds (D331). 



Order ULOTRICHALES 



Family ULOTRICHACEAE 



Ulothrix tenerrima Kuetzing. [Collins, Green Alg. of N.A., p. 183.] 



South Boulder Canyon, 2 miles above Tolland, June 15, 1909, Robbins (9); Teller 



Lake, June 23, 1909, Robbins (8); Teller Lake, June 23, 1909, Robbins (22); ditch near 



Marshall, March 30, 1910, Robbins (40); Bluebell Canyon, near Boulder, April 29, 1910, 



Robbins (54). 



U. tenuissima Kuetzing. [Collins, Green Alg. of N.A., p. 183.] 



Ditch near Boulder, March 10, 1910, Robbins (41); stream at foot of Arapahoe 



Glacier, Henderson (13), determined by Collins. 



U. oscillarina Kuetzing. [Collins, Green Alg. of N.A., p. 184.] 



Jenny Lind Creek, near Tolland, June 27, 1911, Brannaman (66). 



