Vaucheria] mi. vaucheriacrx (West). 
xii. VAC* iii:i;i.\< i:.i:. 
I. VAUCHERIA he. (1803). 
]. V. sessilis DC Flor. Fr, ii. •;:; (1805) j Cooke, Brit. Freshw. 
Alg. L23, t. If., t. 1 -Jo and t. 18, f. I - W. et G S. Wesl 
in Journ. Bot. L897, \>. •_ , :;."». 
Ectosperma sessilis Vauch. lli>(. Conferv. 31, (. ii. t". 7 | . 
Goli ngo Alto. In fosais exsiccatia adhac humidia in Varzea pone 
domicilium [sidri ; Aug. and Sept. 1855. N'".132. Covers in Aug. and 
Sept. all the balf-dried-up ditches of the marshy plain ( Varaea). 
Var. monogyna W. el G. S. Wesl in Journ. Bot. I s '.'7. p. 235. 
Golungo Alto. Ad margines stagnorum rivi Cuango ; Aug. 1857. 
No. 155. 
Kill. HYDROGASTRAi i;.i:. 
I. BOTRYDIUM Wallr. (1815). 
1. B. granulatum Grev. Alg. Brit. 196, t. six. (1830); i 
Brit. Freshw. Alg. 1 i 1. t. 45. 
Uloagrcmvlata I . Sp. PI. L633. Hydrogaslwmgranukilum D< 
\ .ir. aequinoctiale W. <i G. S. Wesl in Journ. Bot. L897, p. 235. 
Loanda. — Non infrequena in territor. Loandensia tenia hnmidis 
argillaceo-arenosis, latia plagis imo urbis i i > s i u >; plateas 
mox post pluviaa copiosas oascena, eitoque tempore sicco diaparena. 
Ad fin. April 1854. No. 199. 
Very little could be made out from the specimens, which 
dried mud, but ;i rough sketch made by Welwitsch accompanying tli m 
was sufficiently characteristic of tin- genus. 
XIV. PALMELLACEjE. 
1. COZLASTRUM Nii- (1849). 
1. C. robustum Hantzsch in Elabenh. Alg. Europ. no. I 107 . 
Eteinsch inAbhandl. Naturhist. Gesellsch. Nurnberg, Bd. ■">. II. 2, 
88(1866); Schmidle in Berichte der Naturfors. Gesellsch. Freib. 
79, i. ii. E. J I (1893); W. e< <:. S. Wesl in Journ. Bo1 
P. 236. 
r. indicium W. B. Turn, in K. Sv. Vet.-Akad. Handl. Bd. 25, 
no. 5, 161, t. xx. E. 1 I (1893). 
Libongo. — Ad margines flum. Lifune; Sept. 1858. N.i. 204 
Var. confertum W. et <;. S. West, /.'•. 
Libongo. — Cum form. typ. No. 204 
2. SORASTRUM tiitz. (1845). 
L. S. spinnlosum Nag. Gatt. einz. Alg. 99, t. v. D. 184 W. 
n <:. s. West, I.e. 
Libongo. Ad margines Bum. Lii -04. 
