48 



CARL SKOTTSBERG, MARINE ALG.E 2. RHODOPHYCE^E. 



The tctrasporic sori form patches 011 both sides of the veins, being confluent över 

 the veinless end-lobes. The cystocarps are dispersed över the frond, on or between the 

 veins as in other Nitophylla. They are conical with a thickened tip. 



A conspicuous feature, observed in all specimens, are the small marginal papillae, 

 illustrated in fig. 21 d. 



The growing tip, fig. 21 e, shows that our species must be removed from Delesseria; 

 neither can it be placed with Phycodrys. The apical cell is present in the smallest proli- 

 ferations only as is the case in most Nitophylla. It shows about the same kind of growth 







Fig. 21. Nitophyllum condensatum: 

 d marginal papillae, X 240; 6 top 



orig 



a — b, top and basal part of one and the same frond, and C part of female plant, x 1}; 

 of small proliferatoin, X 240; f — g cross sections of stipes, f of Dclesseria condensata 

 Reinsch, g of Pteridium Bertrandii oig. Cotton, x 70. 



as described for N. punctatum by Nienburg, 1. c. p. 186 — 188. The anatomical structure 

 is entirely nitophylloid, see fig. 21 f. Nor can I find that the venation or branching speaks 

 against referring D. condensata to Nitophyllum, in the wide sense that this genus is taken 

 at present. 



I ha ve not seen the type of D. laciniata Kutz., but it may be the same: in any case, 

 the combination N. laciniatum is preoccupied. N. affine Reinsch is, to judge from the 

 figure, a young frond of N. condensatum. D. propinqua J. Ag. has not been described; 

 the specimens distributed by Hohenacker clearly show that it is the same as conden- 

 sata. Agardh reduced both propinqua and laciniata to D. pleurospora Harv. from 

 New Zealand, but type specimens of the latter in Herb. Kew look quite different. And 

 a section through the stipe of propinqua has no likeness whatever to the figure of D. 



