194 



CAPE ALG^. 



C. Lwde7ibergii Bind.. Port Elizabeth, Fargif/ift?- ! Cape Morgan, 

 Flanaf/an ! Kowie, Becker ! 



C. MucEONATUM J. Ag. Soa Poiut, Boodle ! Weber van Basse ! 

 Cape, Scott Elliot ! 



C. ADHERENS Ag. Kuysna, Newdigate ! Port Elizabeth, Farquhar ! 

 The specimens of this alga, which have been sent by Miss Newdi- 

 gate, preserved in spirit, are only attached to the substratum at 

 the centre of the thallus, and the rest of the flat frond is free, 

 though prostrate. It was suggested to me that this was a new 

 species of Codiuw, but since in the same sending I find plants in 

 which the thallus entirely adheres to the substratum, I believe that 

 all the specimens are but forms of C. adhcerens ; the more so that 

 all of them exhibit the clavate exterior cells with the very long 

 cylindrical filaments below, found in C. adlmrens. Prof. J. G. 

 Agardh, in his Till Ahjerncs Systematik, pt. viii. p. 37, in speaking 

 of this species, says, " lobis demum a rupibus plus minus solutis," 

 showing that the unattached lobes in C. adhcerevs are not unknown. 



PsEUDOcoDiuM Devriesii Web. van Bosse, ined. Isipingo, Natal, 

 Weber van Bosse ! Kei Mouth, Flanagan ! 



Haliseris Ugiilata Suhr. 

 Stilophora RmZODES J. 



PHiEOPHYCE^. 



Port Alfred, West ! Kowie, Becker ! 



Ag. Hagahaga Mouth, Flanagan ! 



Streblonema Codii, n. sp. Fills 

 primariis repentibus, ramosis, usque ad 

 18 /x latis, intra cellulas hospitis profunde 

 penetrantibus, articulos irregulares prte- 

 bentibus. Fills secundariis erectis, circa 

 et supra cellulas hospitis emergentibus, 

 fasciculate ramosis, 8-10 /x latis, spo- 

 rangiis plurilocularibus, pedicellatis, sub- 

 cylindraceis, apice attenuatis, in media 

 parte transverse 4-seriatim locellatis. 



Hah. in thallo Codii adiuirentis macu- 

 las magnas formantibus, ad Knysna, Cap. 

 bon. Spei. Coll. : C. Newdigate. 



This species appears to be rather 

 uncommon, since of all the plants of Codium adlmrens which I have 

 seen from the Cape, Streblonema Codii grows on only a few, which 

 were sent me by Miss Newdigate, of Forest Hall, Knysna. On these 

 it grows in large, dark patches, spreading over the surface. 



In some points S. Codii resembles M. Sauvageau's new genus 

 Strepsithalia, but it differs from it in the number of transverse 

 loculi of the plurilocular sporangia, Strepsithalia having uniseriate 

 loculi, and this plant having four in the thickest part of the 

 sporangium. A resemblance between S. Codii and Fctocarpus 

 (Streblonema) Stilophorm Crouan, var. caspitosa Rosenv. has been 

 pointed out, but the same difference in the plurilocular sporangia 

 applies here as in the case of Strepsithalia. 



Streblonema Codii, x 170. 



