376 xx. vaginarie.e (West). [Microcolens 
4. MICROCOLEUS Desmaz. (1823). 
1. M. vaginatus Gomont in Joum. de Botaniq. iv. 353 (1890) ; 
iu Ann. Sci. Nat. 7 C serie, Bot. xv. 355-8, t. 14, f. 12 (1892). 
Oscillatoria vaginata Vanch. Hist. Conferv. 200-1 t xv f 13 
(1803). 
Var. monticola (Kiitz.) Gomont in Ann. Sci. Kit., I.e., 356 
(1892) ; W. et G. S. West in Journ. Bot, 1897, p. 272. 
Pungo Andongo. — Inter Porphyrosiphonem Notarisii et Lyngbyam 
aerugineo-coBruleam, prope Condo ; March 1857. No. 9. 
2. M. sociatus W. et G. S. West in Journ. Bot. 1897, p. 272. 
Huilla. — Inter Schizotrichem natantem et Microsporam Lb'fgrenii, 
in uliginosis editioribus prope Humpata, Empalanca et Lopollo : 
May 1860. No. 15. 
This differs from M. lacustris (Rabenh.) Farlow in its narrower 
trichomes with cylindrical cells, its acutely conical apical cells, and in 
its firmer sheaths. 
XXI. LYNGBYE^. 
1. SYMPL0CA Kiitz. (1843). 
1. S. Muscorum Gomont in Journ. de Botaniq. iv. 354 (1890) ; 
in Ann. Sci. Nat. 7 e serie, Bot, xvi. 110-12, t, 2, f. 9 (1892) ; W. 
et G. S. West in Journ. Bot. 1897, p. 297. 
Oscillatoria Mtiscorum Ag. Syst. Algar. 65 (1824). 
(a) Crass, trich. 5 - 5-6 p.. 
Loanda.— Ad terram humidam urbis Loandai, tempore pluvio ; 
April 1854. No. 161. 
(/?) Crass, trich. 8-9 /x. 
Huilla. — Alga atro-viridis, viscoso-gelatinosa, exsiccata fere peni- 
cilliformis, inter muscos (Bryum No. 25) texta, in maxime umbrosis ; 
Morro de Monino ; Feb. 1860. No. 181. 
2. LYNGBYA C. Ag. (1824). 
1. L. aureo-fulva W. et G. S. West in Journ. Bot, 1897, p. 298. 
PUNGO Andongo. — Freq. in humidis ad dextram num. Cuanza ex 
Candumba usque Quisonde ; March 1857. No. 10. ''Alga terrestris, 
in vivo aureo-fulva vel flavescens, membranis spongiosis latissimis 
graminum casspitibns intertexta, Droseraceis et Eriocanlonaceis solum 
spongiosum offerens." 
2. L. Martensiana Menegh. Conspect. Algol. Eugan. 12 (1837) ; 
Gomont in Ann. Sci. Nat. 7 e serie, Bot. xvi. 145-6, t. 3, f. 17 
(1892) ; W. et G. S. West, I.e. 
Golungo Alto. — Ad muscos prope fontem magn. ad Banca do 
Sobato de Bango ; Sept. 1855. No. 159. 
Luanda. — Cum Symploca Muscorum ad terram humidam urbis 
Loandte, tempore pluvio ; April 1854. No. 161. 
3. L. aerugineo-caerulea Gomont, I.e., 146-7, t. 4, f. 13 (1892) ; 
W. et G. S. West, I.e. 
Oscillaria cerugineo-cosrulea Kiitz. Phyc. Gener. 185 (1843); 
Tab. Phyc. i. (1845-9), 28, t. 39, fig. ix. 
