Lyngbi/a] xxi. LYNGBYEiE (West). 377 



PuNco Anikingo. — Inter Porphyrosqihonem Notarisii prope Condo ; 

 March 1857. No. 9. 



4. L. versicolor Gomont, I.e., 147, t. 4, fig. 4, 5 (1892); 

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



Fhm'midium versieolor Wartm. (1861). 



MossAMEDES. — Ad ripas limosas flum. Bero pr. Cavalheiros ; June 

 1859. No. 176. 



3. PHORMIDIUM Kutz. (1843). 



1. P. subsolitarium W. et G. S. West in Journ. Bot. 1897, 

 p. 298. 



PuNGO Anpongci. — In Batrachospermo gracillimo ad lapides sub- 

 mersas in rivulo de Tangue ips. Preesidii ; May 1857. No. 3. 



The momliform cells and the delicate hyaline sheath place this plant 

 in the genus Plwrmidium, although the plants often occur singly. 

 The elliptic cells and subsolitary habit characterise the species. 



2. P. angustissimum W. et G. S. West in Journ. Bot. 1897,. 

 p. 298. 



MossAMEDES. — Inter Glceotrichiam cethiopicam et Charam sp. in rivo 

 Caroca prope Cabo Negro ; Sept. 1859. No. 19. 



PuNGO Andongo. — Inter Nostoc repandum ad rupes editiores vulcan. 

 Praesidii prope Oabondo tempore pluvio ; Feb. 1857. No. 21. 



This narrow species is nearest to P. laminosum (Ag.) Gomont, but 

 it is distinguished by its much narrower trichomes, which are con- 

 stricted at the dissepiments, and its usually much longer cells. 



3. P. laminosum Gomont in Journ. de Botaniq. iv. 355 (1890) ; 

 in Ann. Sci. Nat. 7'= serie, Bot. xvi. 167-8, t. 4, f. 21, 22 (1892) ; 

 W. et G. S. West, I.e., p. 299. 



Oscillatoria lamiiwsa Ag. in Flora, x. 633 (1827). 

 GoLUNGO Alto. — Ad terram limosam post pluvias ; Dec. 1855. 

 No. 166. 



4. P. Corinm Gomont in Journ. de Botaniq. iv. 365 (1890) ; in 

 Ann. Sci. Nat., I.e., 172-3, t. 5, f. 1, 2 (1892); W. et G. S. West, I.e. 



Oscillatoria Carium Ag. Dispos. Algar. Suec. 36 (1812). 



SiERKA Leone. — Cum Oscillatoria animali ad parietes humid, 

 verticales urbis Freetown f req. latissimis plagis atro-nitentibus parietes 

 obducens ; Sept. 1853. No. 167. 



5. P. papyraceum Gomont in Journ. de Botaniq. iv. 355 (1890) ; 

 in Ann. Sci. Nat., I.e., 173-5, t. 5, f. 3, 4 (1892); W. et G. S. 

 West, I.e. 



Osaillatona papyracea Ag. Syst. Algar. 61 (1824). 



Sierra Leone. — Ad muscos (hepaticas) humidos in domicU. 

 parietibus verticalibus urbis Freetown frequens tempore pluvio ; Sept. 

 1853. No. 174. 



6. P. Retzii Gomont in Journ. de Botaniq. iv. 355 (1890); in 

 Ann. Sci. Nat., I.e., 175-8, t. 5, f. 6, 9 (1892); W. et G. S. 

 West, I.e. 



Oscillatoria Retzii Ag. Dispos. Algar. Suec. 36 (1812). 

 PuNGO Andongo. — Ad muscos (Jungermannias) submersas in rivulo 

 Tangue pr. Catete ; May 1857. No. 165. 



