A CON'I HIlUniON 



TO (lllll 



knowtedge of the Treshwater Algx of Columbia 



G. S. West, M. A., D. Se, F. L. S., 



Profcbsor of Botaiiy in tlic Univcrsity of f)iniiiii);liaiii. 



Alllioiii^li wo liavc a coiisidcnililc g^cniMal kii(i\vlccly;c of llic Alua-llora «if llic fir>h- 

 waters ot'Sontli Aiiiciica, nolhin;,' lias hecii iircvionsly iiuldi.slicd un llio ricsliwiilcr Altra- of 

 ("oliimhia. 'l'Iie coliecliotis maclc l)y Dr. Mayok iii liis Scieiilitic Hx-pcdilidii of 1910 lo 

 the Coluinhiaii Aiulcs liave llicrefon» provcd oF ^çrcal iiileiesl. TIichî wito in ail Iwfiily- 

 four lubes of alt^'al matcrial collertod al alliliidcs varviiit;- frniii \'^'») lo .iCmo inclres. 

 Thcy wcre as follows : 



N"* I and 2. Laguna al)Ovc Medcllin, Dcpailiuciil Aiilioqiiia, (leiilral Andes. Allil. 



23oo m. 

 N"* 3" and /|. Lai^iina abovc Estivlla ncar Mcilcllin, Dcp. AMliii(|iiia, Central Andes. 



AUit. 2600 ni. 

 N" f). Bog- near llie Lai^una ahove Modellin, Dej). Anlioqnia, Central .\ndes. .Mlil. 



23oo m. 

 N" C). Ditches between Medellin and .Vinerica, I)e|i. Anlinf|nia, Central .\ndes. .Mlil. 



i55o m. 

 N» 7. Ditch above Atnerica and near Medellin, Dep. .Vnlincjuia, Central Andes. 



Al lit. i85o m. 

 X"" 8 and 9. Pool npon tlie Alto Don Elias near .Vnselopolis, Dep. .\ntioquia. 



Central Andes. Allil. 2100 ni. 

 N» 10. Pool on the lasl slope of the .Vllo Don Elias near Angelopolis, Dep. .\nlio- 



quia, Central Andes. Allil. 2100 m. 

 N"* II and 12. Laguna Santa Rila near Angelopolis, Dep. Antioquia, Centrai .\ndes. 

 Altit. 1600 m. 



