WELWITSCh's AFRICAN FRESHWATER ALG^. 119 



Huilla. In uligiuosis editioribus prope Humpata, Empalanca 

 et Lopollo; May 1860. No. 15. 



31. C. NOKiMBERGENSE Reiiisch ill Abhandl. Naturhistor. Gesellsch. 

 yumberg, Bd. 3, 113, t. ix. f. 2 (1866). C. Hammeri Reiuscb, var. 

 octogihbosum Reinsch, I.e. 112, t. x, f. 1. 0. octogibbosum (Reinsch) 

 W. B. Turn, in A'. Sv. Vet.-Akad. Handl. Bd. 25, 52 (1892). C. octo- 

 (jibbosum var. indica W. B. Turn. /. c. t. viii. f. 8. 



Forma elongata. C. exlgman Arch. var. norimbergense Sclimidle 

 in Flora, Ixxviii. 56, t. vii. f. 17 (1891). Forma subduplo lougius 

 quam latius. Long. 16-18 /x; lat. 9*5 /x; lat. istbm. d (/,; crass. 

 7 i^ (tab. 368, figs. 4, 5). 



Huilla. In paludibus exsiccandis ; April 1860. No. 176. Inter 

 Utriculariam, Morro de Lopollo; April 1860. No. 179. In uli- 

 ginosis editioribus prope Humpata, Empalanca et Lopollo ; May 

 1860. No. 15. 



Forma depressa. Long. 11 ^jl ; lat. 11 jx; lat. istbm. 3*5 jw. 



Loanda. In stagnis ; Febr. 1858. No. 136. 



32. C. Meneghinii Breb. in Ralfs, Brit. Desm. 96, t. xv. f. 6 

 (1818). Long. 12-5 -13-5 /x ; lat. 9-5-10 ju ; lat. istbm. 3 ,00; 

 crass. 6 /x. 



Libougo. Ad margines flum. Lifune ; Sept. 1858. No. 201. 



Small forms, but otherwise exactly agreeing with the figures in 

 Ralfs (/. c). 



Var. ANGULosuM (Breb.) Rabenh. Fl. Europ. Alg. iii. 163 (1868). 

 C. angulosum Breb. in Mem. Sciences Nat. Cherbourg, iv. 127, 303, 

 t. i. f. 17 (1856). Long. 11-12-5 y.; lat. 8-5-9-5 // ; lat. istbm. 

 3 |W,; crass. 4-5-5-5 ja.. 



Huilla. In uliginosis editioribus prope Humpata, Empalanca 

 ct Lopollo ; May 1860. No. 15. 



Pungo Audongo. Ad ramulos Podostemacearum in rivulis ; 

 March 1857. No. 105. 



Var. siMPLiciMUM Wille in Vid.-Selsk. Forhandl. Christiania, 

 no. 11, 30, t. i. f. 11 (1880). Long. 13-5-20 f^; lat. 9-5-15,*; 

 lat. istbm. 1-5-4-5 ^^•, crass, usque 9 f/.. 



Libougo. Ad margines flum. Lifune; Sept. 1858. No. 204. 



Pungo Andongo. Ad ramulos Podostemacearum in rivulis ; 

 March 1857. No. 105. 



33. C. L.^vE Rabenh. Fl. Europ. Alg. iii. 161 (1868) ; Nordst. 

 in Ofv. K. Vet.-Almd. Fdrh. no. 6, 29, t. xii. f. 4 (1876). 



Var. MINIMUM, var.n. (tab. 368, fig. 6). Var. multe minor quam 

 forma ty pica. Long. 11-5 /x; lat. 8-5 /x; lat. istbm. 2 /x ; crass. 5 |X. 



Huilla. In uliginosis editioribus prope Humpata, Empalanca 

 et Lopollo; May 1860. No. 15. 



34. C. suBPYRiFORME Lagcrb . in Botan. Notiser, 1887, 197, c. fig. 

 A very small form with rather broader bases to the semicells than 

 the type ; other views not obtainable. Long. 23 /^ ; lat. sub. apic. 

 11 fi; lat. has. semicell. 8-5 /x ; lat. istbm. 2-7 /x. 



Huilla. Inter Utriculariam, Morro de Lopollo; April 1860. 

 No. 179. 



