PRELIMINARY LIST OF THE ALGAE OF COLORADO IO9 



Family BOTRYDIACEAE 



Botrydium granulatum (L.) Greville. [Collins, Green Alg. of N.A., p. 98.] 



Tolland, on moist soil in depression about 100 yds. east of laboratory, July 19, 1911, 

 Brannaman (72). 



Class CHLOROPHYCEAE 

 Order CONJUGALES 



Family DESMIDLACEAE 



Desmidium cylindricum Greville. [Wolle, Desmids of U.S., p. 25.] 



Lake Eldora, July 14, 1910, Bruderlin. 

 D. swartzii Agardh. [Wolle, Desmids of U.S., p. 26.] 



Redrock Lake, August 18, 1908, Ramaley (1, 10); Redrock Lake, August 18, Dodds 

 (D297); Bog Lake, August 18, 1908, Dodds (D301); Lily Lake, August 19, 1908, Dodds 

 (D321). 

 Penium closterioides Ralfs. [Wolle, Desmids of U.S., p. 35.] 



South Boulder Creek, July 2, 1910, Goldsworthy; Park Lake, near Tolland, July 19, 

 1910, Goldsworthy. 

 P. closterioides spirogranatum Cushman. [Bull. Torr. Bot. Club, Vol. XXXI, pp. 



161-164, 1904.] 



At the head of Tank Creek, Southwestern Colorado, 1903, Tower. 

 P. digitus (Ehrenberg) Brebisson. [Wolle, Desmids of U.S., p. 34.] 



At the head of Tank Creek, Southwestern Colorado, 1903, Tower. 

 Closterium acerosum (Schrank) Ehrenberg. [Wolle, Desmids of U.S., p. 41.] 



Wet Mountain Valley, near Ula, 1889, Cockerell. 

 C. acuminatum Kuetzing. [Wolle, Desmids of U.S., p. 44.] 



Manchester Lake, near Rollinsville, August 29, 1908, Ramaley (5). 

 C. acutum Brebisson. [Wolle, Desmids of U.S., p. 44.] 



Manchester Lake, August 29, 1908, Ramaley (5). 

 C. cucumis Ehrenberg. [Wolle, Desmids of U.S., p. 40.] 



Wet Mountain Valley, Short Creek, 1889, Cockerell. 

 C. leibleinii Kuetzing. [Wolle, Desmids of U.S., p. 46.] 



Wet Mountain Valley, 1889, Cockerell. 

 C. parvulum Naegeli. [Wolle, Desmids of U.S., p. 45.] 



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



C. striolatum Ehrenberg. [Wolle, Desmids of U.S., p. 42.] 



Boulder Creek, 2 miles above Tolland, July 9, 1910, Goldsworthy; Lake Eldora, 

 July 14, 1910, Bruderlin. 

 Docidium coronatum Rabenhorst. [Wolle, Desmids of U.S., p. 49.] 



Lily Lake, August 19, 1908, Dodds (D321). 



D. trabecula (Ehrenberg) Naegeli. [Wolle, Desmids of U.S., p. 48.] 



At head of Tank Creek, Southwestern Colorado, July, 1903, Tower. 



