193 



CAPE AhGM. 



By Ethel S. Barton. 



Since publishing the Provisional List of the Marine Algae of the 

 Cape of Good Hope in the Journal of Botany for 1893, much work 

 has been done by collectors in that region. Many of these, notably 

 Mr. Tyson, Miss Newdigate, Mr. Flanagan, Mr. Slavin, and Mr. 

 Maurice Evans, have sent plants of interest to the British Museum, 

 and Dr. Becker has also sent collections to the same Institution, to 

 the late Prof. Schmitz of Greifswald, and to Mr. Holmes ; so that 

 the South African area bids fair to be well explored. I propose, 

 therefore, to publish by degrees a revision of my previous Cape List, 

 with the additions which have been made to the Flora since 1893, 

 and to add critical notes to such species as appear of doubtful 

 authenticity or require further investigation. In this revision 

 I hope to have the assistance and co-operation of my friend Mrs. 

 Weber van Bosse, who spent some months in South Africa in 1894, 

 and brought back a collection of Algae from various parts of 

 the coast. The revision will contain as far as possible all fresh 

 records of plants ranging from Walfisch Bay to Natal, and, later on, 

 the coast-line will be divided up into areas determined by the tempe- 

 rature of the water, and these areas compared with each other and 

 with other parts of the world. Our knowledge of the ComUincB of 

 South Africa is in the same unsatisfactory state as it has ever been, 

 since it is impossible to work out this group at a distance from the 

 growing plants. I must here record my grateful thanks to Major 

 Reinbold for his never-failing kindness in sending me many speci- 

 mens for comparison, and to Mr. Batters for advice and help on 

 critical points. Species not included in my previous list are here 

 printed in capitals. 



Protophyce.e. 



Lyngbya iESTUAEii Licbman. Cape, Harvey ! 

 L. MAJUscuLA Harv. Kei Mouth, Flanagan ! 

 Calothrix ^euginea Thur. Cape Morgan, Flanagan ! 



Chlorophyce^. 



Enteromorpha rhacodes Holmes. Mouth of Kowie River, Becker ! 



Letterstedtia iitsignis Aresch. Port Elizabeth, Weber van Bosse ! 

 Port Alfred, Slavin ! Kowie, Becker ! 



Urospoka penicilliformis Aresch. Kalk Bay, Boodle ! on Cha;- 

 tangium saccatum. 



Cladophora catenifera Kiitz. {= Conferva vftdiosa Suhr). Algoa 

 Bay, Suhr\ Port Alfred, Slavinl Cape Morgan, Danvensl 



Udotea Desfontainesii Dene. Natal, Kvans ! 



Caulerpa plumaris Ag. Kowie River, Tobias ! Cape Morgan, 

 Flanagan ! 



C. Bartoni^ Murr. British Kaffraria, Flanagan ! 



CoDiuM Bursa Ag. Natal, Evans ! 



Journal of Botany. — Vol. 34. [May, 1896.] o 



