\\ III. NOSTOOE I (WeBt) 
Will. NOSTO< U.K. 
1. NOSTOC Vauch. (1803). 
1. N. repandum \\ . el G. S. Wesl in Journ. Bot. 1897, p. 267. 
Pi ngo Andongo. Freq. ad rupea editiorea vulcan, Praesidii prep.- 
Cabondo tempore pluvio, intra dies doae treave ingente oopi 
Feb. 1857. No. 21. 
The nearesl Bpeciea t" this is A. humi C m., from which 
it is distinguished by its very large coriaoeoua non-tuberculati 
uhallus, by its constantly elliptical or doliform cells, and by iU 
heterocysts and spores. 
2. N. paradoxum Welw. ex W. el <:. S. Wesl in -loin B 
1897, p. 268. 
Pin.,.. Andongo.- Ad muscoa dense ctespitosoa juxta rivuloa props 
Pedra Songue in ips. Praesidio ; April 1857. No. 20- 
This species belongs to that division of the section Humifum with 
cylindrical 'til-. 
:;. N. muscorum Ag. Dispos. Algar. Suec. 11 (1812); Etttz. 
Tab. Phyc. ii. (1850 2), 2, t. 5, f. [v.; Born, el Flah., I.e., vii. 
■jih i l , 1888); W. el G. 8. West, l.c. 
Pi ngo Andongo Ad rupee schist, pr Candumba-Calundo ; Jan. 
1857. No. 22. Cambondo ad rupes ; Feb. 1857. N<>. 285. 
4. N. minutum Desmaz. Plantes Oryptog. du Nbrdde la France, 
fasc. xi. no. 501 (1831); Born, el Flak, I.e., 209 (1888) j W. el 
G. S. West, l.c. 
This is nut identified with certainty, as it was seen in v< ry small 
quantity ; spores elliptical, concatenate. 
Mossamedes. — Inter (Edogonii sp. in stagnis puris ad ripas Hum. 
Bero : Aug. 1859. No. 190. 
2. ANAB^NA Borj (1822). 
1. Anabaenae sp. W. el G. S. West. /.,-. 
Golungo Alto. -Specimens very fragmentary, and Bpo 
attached to the trichomes. 
Freq. sed cito marcescens ad latera rivuli Coango Ac 
No. 163. 
XIX. CAMPTOTRICHE.E. 
W. et G. S. West in Journ. Bot. 1897, p. 2 
1. CAMPTOTHRIX \\ . el G. 8, West, l.c, p. 269. 
1. C. repens W. el G. 8. West, l.c. 
Hi a la. Bpiphytioa supra Schizotrichem ttatcu I • t 
Mciatum, in uliginosis editioribus prope Qumpata, Empalanoa <• 
Lopollo, plagas Bpongiosas unacum Eriocauloneis, Xyridibua < t Otricu 
lanis constituenB, 5000 ad 5500 ped. elevat. ; Biaj I860. N<>. 15. 
The diverse forms of the cells and their irregular disposition in the 
short tapering filaments give a character to this genus nol posa 
any other of the genera of either the Vagm ■■ oi the I 
aecessitated the plant being plao d a~ the t\ pe of a uew ord< r (( 
trichea ) of fformog II 
