232 



FEESH-WATER ALGJE FROM BURMA. 



Class: HETEROKONTiE. 



Order: CONFERVALES. 



Family: TEIBONEMAORE 



Genus: Ophiocytium Nag. 





198. Ophiocytium ma jus Nag. 



Gatt. 



emz. 



A Jar. 



& 



Lemm. Gen. Ophiocytium, 1899, p. 29, t. 3, f. 3-5. 



1849, p. 89, t. 4 A, 





JIab.— Kyauktaga, Pegu district (No. 22124) 



This and 



and several other species of the genus Ophiocytium are generally distributed in 

 and stagnant pools of both temperate and tropical regions. 



199 







Europ. Alg 



cochleare (Eichw.) A. Br. Alg. unicell. 1855; Rabenh. Flor 

 iii, 1868, p. 67; Lemm. La, p. 30, t 3, f. 10-12. 



Forma; diam. cell. 8'5/a. (PI 



Mansang, near Hsipaw 



JIab 



fig. 13) 

 24193) 



200. Ophiocytium bicuspidatum (Borge) Lemm. I.e., p. 31, t. 3, f. 13-15. 



0. 



Nag. var. bicuspidatum 



majus 



Borge, Siissw. Chlor. Archang. 1894, t. 1, f. 3. 



Small forms ; diam. cell. 6*5/*. 

 Ilab.— In swamp, Katha (No. 22677). 



201 



Ophiocytium parvulum (Perty) A. Br. Alg. unicell. 



1855 



1 



p. 33 



P 



55 



Lemm 



JJak 

 Kawkareik 



Brochidium parvulum Perty 



iDg, near Hsipaw 



Man 



the 



de-channel of a stream 



24193) 



202. 

 Cell. 



filiform a; 



ELONGATUM Sp. n. (P] 



curvata instructae. 



Ophiocytium 



d singulis, 

 diametro usque ad 70-pl 



Between Thingan-nyi-naung 

 24483). 



figs. 11, 12). 



and 



libere 



viventes, perlongae, irregulariter arcuatae vel flexuoso 



lo 



giores, uno polo rotundato altero spina parva 



Crass, cell. 5-5'5/i ; long. spin. 3'7-4-7^ 



JIab 



In swamp, Katha 



22677) 



This species differs 





habit 



broader and much longer cells, 



and in the very much shorter spine. It is more slender than O. cochleare (Eichw.) A. Br., and 

 cells are more elongate and not closely coiled. 



Genus: Tribonema Derbes & Solier. 



203 



Tribonema bombycinum (Ag.) Derbes & Solier, Mem.* sur physiol. Alg. 1856 



P. 18, t. 4, f. 16-21 



Conferva bombycina Ag., 1817; Kiitz. Spec. Alg. 1849, p. 371; Lagerh. Stud. 

 Gatt. Conf. u. Microspora, 1889, p. 194-209, t. 6, 



#• 



