358 XI. DESMiDiACEiE (West). [Ci 



osmanum 



61. C. contractum Kirchn. in Cohn, Kryptogamen-flora von 

 Schles. Zweit. Bd. 147 (1878); WoUe, Desm. U. S. 63, t. 16, f. 1 ; 

 t. 50, f. 24 (1884) ; W. et G. L. West, I.e. 



PuNGO AxDONGO. — In stagnis prope Anbilla (Condo) ; March 1857. 

 No. 177. 



62. C. Oocystidum W. et G. S. West in Journ. Bot. 1897, 

 p. 175, t. 366, i". 21. 



HuiLLA. — Inter Uti'icukiriam, Morro de Loiwllo ; April 1860. 

 No. 179. 



63. C. Cucurbita Breb. in Desmaz. PI. Cryptog. Fr. fasc. xxiii, 

 1103 (1841), in ed. i. ser. i. (1825-51); Ralfs, Brit. Desm. 108-9, 

 t. xvii. f. 7 (1848) ; W. et G. S. West in Journ. Bot. 1897, p. 176. 



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

 Utricular knn, Morro de LopoUo ; April 1860. No. 179. Morro de 

 Lopollo ; Feb. 1860. No. 192. 



All the African examples are more densely and minutely punctate 

 than the typical plant. 



Forma minoi' W. et G. S. West, I.e. 



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



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



HuiLLA.^ — Cum forma typ. No. 179. 



64. C. palangula Breb. in Ralfs, Brit. Desm. 212 (1848); 

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



HuiLLA. — In uliginosis editoribus prope Humpata, Empalanca et 

 Lopollo ; May 18G0. No. 15. 



13. STAURASTRUM Meyen (1829). 



1. S. leptodermum Lund, in Nova Acta R. Soc. Scient. Ups. 

 ser. 3, viii. no. ii. 58, t. iii. f. 26 (1871). 



Forma oninor W. et G. S. West, in Journ. Bot. 1897, p. 176. 

 LiBoNGO. — Ad margines flum. Lifune ; Sept. 1858. No. 204. 



2. S. tripodum W. et G. S. West in Journ. Bot. 1897, p. 176, 

 t. 369, f. 11. 



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

 This species and S. xiphidiophorum Wolle are respectively simple 

 and complex species of a distinct section of this genus. 



3. S. crux-alternans W. et G. S. West in Journ. Bot. 1897, 

 p. 176, t. 369, f. 14. 



HuiLLA. — Inter XJtrtcularkim, Morro de Lopollo ; April 1860. 

 No. 179. 



This at first sight reminds one of S. inconnpicuum Nordst. ; but 

 it differs in its much more robust processes, which are directed 

 horizontally, and have not the nodulose swelling on the under side. 



4. S. huillense W. etG. S. West in Journ. Bot. 1897, p. 177, 

 t. 368, f. 17. 



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



5. S. egregium W. et G. S. West in Journ. Bot. 1897, p. 177, 

 t. 369, f. 12. 



