^36 VII. CLADOPHORACE^ (West). [Cludophora 



2. CLADOPHORA Kutz. (1843). 



1. C. crispata (Roth) Kiitz. Phyc. Gener. 264 (1843) ; Cooke, 

 Brit. Freshw. Alg. 143, t. 55, fig. 3 ; W. et G. S. West in Journ. 

 Bot. 1897, p. 36. 



A form with the filaments not more than 1 to 1^ cm. high ; 

 branching subdichotomous, subseciind towards the apex ; cells 

 6-12 times longer than broad. 



LoANDA. — From the bottom of the well at Welwitsch's house in 

 Loanda ; Jan. 1859. No. 144. 



2. C. amplectens Welw. ex W. et G. S. West in Journ. Bot. 

 1897, p. 36. 



Loanda. — Ad imam basin truncorum Rhizophorarum tempore 

 refluxus oceani aeri expositarum ad littora Loandensia frequens ; 

 Nov. 1853. No. 23. 



This species belongs to the section (Egagropila, and has rather a 

 peculiar habit ; Welwitsch likens the appearance of a tuft to that of 

 a child's head. 



3. Cladophorae sp. 



A minute fragment, insufficient for accurate determination ; 

 filaments about 1"5 mm. in length, branched repeatedly and 

 irregularly ; cells 1^ to 3 times as long as broad, mostly some- 

 what inflated, terminal cells acutely conical. Crass, cell. 33 to 

 56 /A. I.e. 



PuNGO Andongo. — On Helices in Lagoa de Quibonda ; Sept. 1857. 

 No. 200. 



VIII. PITHOPHORACEJE. 



1. PITHOPHORA Wittr. (1877). 



1. P. radians W. et G. S. West in Journ. Bot. 1897, p. 36. 



Luanda. — Copiose in aquariis aquae subdulcis iusulse Cassanga prope 

 Morro da Cruz; April 1854. No. 197- " Stirps vegetationis suae 

 luxuria et vitse fugacitate geque insignis." 



The nearest species to this is P. (Edogonia (Mont.) Wittr., from 

 which it differs in its much greater thickness, in having no branches 

 of a third order, in never having binate spores, and in the intercalary 

 spores being much less inflated. 



IX. TEMNOGAMETACE.^ 



W. et G. S. West in Journ. Bot. 1897, p. 37. 



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



1. T. heterosporum W. et G. S. West, I.e. 



HuiLLA. — Forming dense intricate masses with Gonatonema troji/cuiu, 

 Zygneiiia spnntaneum, and Stigeoclonium ? sp., Morro de LopoUo ; Feb. 

 1860. No. 172. 



This is a remarkable plant more particularly on account of its 

 special conjugating cells ; these are short, and cut off either singly 

 or in pairs at intervals along the filaments. In the former case the 

 conjugation is scalariform ; these special cells in two contiguous 



