350 XI. DESMiDiACEiE (West). [Gosmarium 



Var. sethiopicum W. et G. S. West in Journ Bot. 1897, p. 114. 

 LiBONGO. — Ad margines Bum. Lifune ; Sept. 1858. No. 204. 

 Forma scrobiculata W. et G. S. West, I.e. 



PuNGo Andonro. — In stagnis prope Anbilla (Condo) ; March 1857. 

 No. 177. 



9. C. Baileyi Wolle, Desm. U. S. 64, pi. xvi. f. 17, 18 (1884); 

 W. et G. S. West, La. 



0. depressum Bail., non (Nag.) Lund. 



LiBONGO. — Ad margines Hum. Lifune ; Sept. 1858. No. 204. 



Var. angolense W. et G. S. West in Journ. Bot. 1897, p. 114. 



HuiLLA. — Inter Utriculariam, Morro de LopoUo ; April I860.. 

 No. 179. 



Compare with C. Baileyi v. major W. et G. S. West (in Trans. Linn. 

 Soc. 2nd aer. v. 246, t. xiv. f. 36). 



10. C. pyramidatum Breb. in Ealfs, Brit. Desm. 94, t. xv. f. 4 

 a, h, c (1848). 



HuiLLA.— In paludibus exsiccandis ; April 1860. No. 176. Etiam. 

 inter Utriculariam, Morro de Lopollo ; April 1860. No. 179. 

 Forma tropica W. et G. 8. West in Journ Bot. 1897, p. 115. 

 HuiLLA.— Cum typ.; Nos. 176 and 179. 

 Var. parallelum W. et G. S. West, I.e. 

 HuiLLA.— In editis de Morro de Lopollo ; Feb. 1860. No. 192. 



11. C. pseudopyramidatum Lund, in Nova Acta R. Soc. Scient. 

 Ups. ser. 3, vol. viii. no. ii. 41, t. ii. f. 18 (1871); W. et G. S. 

 West, I.e. 



HuiLLA. — In paludibus exsiccandis ; April 1860. No. 176. 



12. C. ligoniforme W. et G. S. West in Journ. Bot. 1897,. 

 p. 115, t. 367, f. 12. 



HuiLLA. — In uliginosis editioribus prope Humpata, Empalanca et 

 Lopollo ; May 1860. No. 15 (freq. c. zygosp.). Morro de Lopollo ; 

 April 1860. No. 182. 



This species closely resembles some forms of C. pseudopyramidatum 

 Lund,, but is comparatively broader with wider apices, has different 

 basal angles, and the zygospore is very different. 



13. C. variolatum Lund., I.e., 41, t. ii. f. 19 (1871); W. et G. S. 

 West in Journ. Bot. 1897, p. 115. 



(a.) Forma scrobieuUs numerosiorihus. 



HuiLLA. — In uliginosis editioribus prope Humpata, Empalanca et 

 Lopollo ; May 1860. No. 15. 



GOLUNGO Alto. — Inter Sirytonema Arcangelii ad muscos prope 

 fontem magn. ad Banja do Sobato de Bango ; Sept. 1855. No. 159. 



(&.) Forma semieellulis latiorihus. 



HuiLLA.— Morro de Lopollo ; Feb. 1860. No. 192. 



14. C. africanum W. et G. S. West in Journ. Bot. 1897, p. 115,. 

 t. 368, f. 1. 



HuiLLA.— In paludibus exsiccandis ; April 1860. No. 176. Morro- 

 de Lopollo; Feb. 1860. No. 192. 



