377 



ALGM FROM CENTRAL AFRICA. 



By W. West, F.L.S., and G. S. West, A.R.C.S. 



(Plate 301.) 



The small collection of Algno which forms the subject of this 

 paper was made by Dr. J. W. Gregory during the expedition to 

 Mount Kenya in 1893. The gatherings were not very rich, but 

 proved to be most interesting ; they were as follows : — 



1. Inkuyuni, Kamassia (from rocks in river). Camp no. G3, 



Coll. no. xxiv. 30th May, 1893. 



2. Lake Losuguta (water with sulphides). Camp no. 51, Coll. 



no. XXV. 16th May, 1893. 



3. Lake Baringo (mud with diatoms). Coll. no. xxx. May, 1893. 



4. G. Laschan, Leikipia. Camp no. 71, Coll. no. xxxviii. June 



13th, 1893. 



5. Mwangadan River, S. of Fuladoga. 



The last one consisted of a mass of dried algte in paper, and on 

 soaking out yielded many species. Of the other four, which were 

 in tubes, no. 4 was the only one which was not thoroughly dry, 

 the corks of the others being almost entirely demolished by beetles. 

 From no. 5 several zygospores of a desmid were seen (diam. c. spin. 

 43 fj.), but, as no semicells were attached to them, these could not 

 be determined. 



(Edogoniace^. 



1. (Edogonium sp. Crass, cell, veget. 6"5-7'5 /x; longit. 5-6-plo 

 major. Mwangadan River, S. of Fuladoga. 



2. (E. sp. Crass, cell, veget. 13-5-15 /x; longit. 2^-4-plo major. 

 G. Laschan, Leikipia. 



CoNFERVACEiE. 



3. Cladophora crispata (Roth) Kiitz. Phyc. Gener. 264 ; Wolle, 

 Freshiv. Alg. U. S. 126, pi. cix. f. 4-10 ; Cooke, Brit. Freshiv. Ah/. 

 143, pi. 55, f. 3. Crass, fil. 29-42 fi. Mwangadan River, S. of 

 Fuladoga. 



Ulotrichace^. 



4. HoRMisciA suBTiLis (Kiitz.) De Toni, Syll. Algar. 159. 

 Ulothrix subtilis Kiitz. Phyc. German. 197; Rabh. Flor. Europ. Aly. 

 iii. 365. 



Var. vARiABUiis (Kiitz.) Kirchn. Alg. Schles. 77. Ulothrix varia- 

 bilis Kiitz. Species Algar. 346 ; Rabh. Fl. Europ. Alg. iii. 365. 

 Crass, hi. 5-6 fx. Mwangadan River, S. of Fuladoga. 



Zygnemace.e. 



5. Spirogyra arcta (Ag.) Kiitz. Tab. Phyc. v. t. 21 ; Rabh. B'l. 

 Eur. Alg. iii. 239. Forma cellulis fructiferis non inflatis. Crass. 

 cell, veget. 34-38 /m ; longit. 1^-plo major ; long, zygosp. 48-50 /x, 

 lat. zygosp. 27 /x. Inkuyuni, Kamassia. 



6. S. setiformis (Roth) Kiitz. Species Alg. 442 ; Rabh. Fl. Eur. 

 Journal of Botany. — Vol. 34, [Sept, 1896.] 2 c 



