4 HENRIK PRINTZ [1920 



Nr. 11—15. In the same place, Oct. 25th, 1912 



» 16 — 23. In the same place, » 27tli, » 



» 24—27. Above Bluff, at the Signal Station, at the 



entrance of the harbour of Durban, » 28tli, » 



» 28 — 37. On Irees and pieces of wood near the 

 ocean, soutli of the Whaling Station, 



Bluff, Nov. 3rci; » 



» 38—53. On trees along Bluff Railway Line, 



towards Eastern Go., near the ocean, » 8tli, » 



» 54 — 59. On trees in the garden of Umgeni Hotel, 



Umgeni River, north of Durban, » lOth, » 



» 60—87. On trees at Umbilo River, » 12th, » 



» 88 — 184. From various localities above Bluff (in 



dense wood), along he cross-road to the 



South African Whaling Go.'s station,.. » 13tli, » 



» 185 — 320. From the forest above Bluff, between 



the South African Whalmg Go.'s station 



and Isipingo Kraales, » 17tli, » 



» 321 — 353. From trees, shrubs, etc, at Ostenwald, 



Saldaha Bay, March iOth, 1913 



» 354—373. From the «bush», on the peninsula 

 between Donkergat and Jutlen Island, 



Saldanha Bay, Cape Golony, » lltli, 1913 



» 374—403. From the water-plaoe, Saldanha Bay, . . » 19tli, » 



It appears from this Ihat the samples were collected within 

 rather small and limited territories and in the course of a shorl 

 period, and it was to be expected beforehand that the material 

 would be somewhat homogeneous. At the same time tlie number 

 of the samples was so large, however, that the account I intend 

 to give in the subsequent pages of this paper, is supposed to be a 

 fairly com-plete survey of Ihe composition of the subaérial algal 

 flora of the said piaces. 



When compared on the basis of the material at hånd, it will 

 immediately be seen that the neighbourhood of Durban is much 

 richer in subaérial algae than Saldanha Bay. All of the species given 

 thus occur at Durban, while only few of them have been observed 

 at Saldanha Bay. This, of course, is a consequence of the climatic 

 conditions, being damp and tropical at Durban, while Saldanha 

 Bay has a dry, desert climate. In my samples there are only 

 two species that can be designated as really conimon at Saldanha 

 Bay, viz. Chlorococcum vitiosum nov. spec. and Pleurastrum 

 lobatiim (Ghodat) Printz. Besides, there occur more spars? y 

 Phycopeltis flabelligera and Ph. arundinacea, while all the rest 

 observed liere, are very rare. 



Thus, the flora of subaérial algae at Saldanha Bay is poorerbolh 

 in quantity and quality. The faet that the same species ai^e to be 



