336 VII. CLADOPHORACB^ (West). [Cladophora 



2. CLADOPHORA Kiitz. (1843). 



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

 Brit. Fresh w. 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, subsecund 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 aerl expositarum ad littora Loandensia frequens ; 

 Nov. 1853. No. 23. 



This species belongs to the section CEgagropila, and has rather a 

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

 a child's head. 



3. Cladophorse sp. 



A minute fragment, insuflEicient 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 jx. I.e. 



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

 No. 200. 



VIIT. PITHOPHORACE^. 

 1. PITHOPHORA Wittr. (1877). 



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



Loanda. — Copiose in aquariis aquae subdulcis insulae Cassanga prope 

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

 luxuria et vitse fugaeitate eeque insignis." 



The nearest species to this is P. CEdogonia (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. temnogametacej: 



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 Goiiatonema tropicum, 

 2ygnema spontaneum, and Stigeoclonium ? sp., Morro de LonoUo : Feb. 

 1860. No. 172. 



This is a remarkable plant more particularly on account of its 

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

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

 conjugation is scalariform ; these special cells in two contiguous 



