184 



FRESfl-WATER ALG£i FROM BURMA. 





Genus : Cladophora Kiitz. 





12. Cladophora crispata (Roth) Kiitz. Tab. Phycolog. 



iv, 



t. 



40, 



f. 



CI. crispata forma I. vitrea Rabenh. Flor. 



Europ. Alg 



in 



> 



1868, p 



1 



336. 



Uab.—ln stream, Lashio. (No. 22557). In river Irrawaddy at Thayetmyo 



(No. 22999). 



Order: SIPHONED. 



Family: VAUCHERIACEjE. 



Genus : Vaucheria DC. 



13. Vaucheria orientals sp. n. (PI. xi 



figs. 



3-9). 



V. aquatica et tenuis, filis modice ramosis nonnunquam 



subcontortis ; oogonia et 



antheridia stipitata supra ranmlos fructiferos perlongos, apice ramuli fructiferi fisso, 

 parte breviori oogonium formante, parte altera antheridium formante; oogonio sessile, 

 prope antheridium terminalem, oblique ovato cum apice subproducto ; antheridio circinato ; 

 oosporis glabris, oogonia complentibus. 



Crass, fil. 26-30/* ; long. 



oogon. 



65-67 



u 



lat. 



oogon. 50-54 : crass, autherid 



14-15/*. 



Hah. — In marshe.-, Mansang near Hsipaw (No. 24193). 



V orient alls is allied to V. scrobicuhta Magn. et Wille (in W 





He, Sydamerik. Algl. 1884, 

 p. 39, t. 2, f. 57-59), a South American species in which the reproductive organs are also 

 developed at the ends of rather long fructiferous branches. It is, however, a much narrower 



species 



i 



and the oospores are not scrobiculate. 



It should also be compared with V. terrestris 



of which are much larger species with shorter fructiferous branches. 



The filaments of V. orientals are somewhat contorted, and the branch 



b. and V. hamata (Vauch.) Lyngb 



both 



is usu 



the 



ng is more profuse than 

 case in species of this genus. The sexual organs are occasionally developed at the 



extremity of a long filament as well as on 



branch 



>s of the same extensive coenocyte. 

 the formation of the sexual organs the extremity of the reproductive branch becomes cleft, 



growing in a circinate manner to form the antheridium, and the other 



porti 



form a sessile oogonium. The antheridial call 

 Borne time before the oogonium is separated. 



In 



one 



arging to 



appears to be cut off from the supporting branch 



14 



Vauch eri 



GLOBULIPERA sp. n. (PI. XI, 



fig 



10) 





V 



quatica et tenu 



OToideis, binis 



supr 



part 



filis flexuosis parce 

 protuberantem filament 



ramosis; oogoniis 



t> 



oosporis globosis glabris oogonia non complentibus 



subopp 



sessilibus, obliqu 

 ore late truncato 



inflatis, diametro 2-3-plo longioribus, binis 



antheridiis subcylindricis vel leviter 



Crass 



fil. 40-42/i ; long 



ppositis et subhorizontaliter dispositis 



59-61^; crass, antherid. 23-30/* 



oogon. 90-100/* 



lat 



oogon. 



62-6 4/i|; diam 



oospor 





