34 ART. 12. K. YENDO. 



positions as before, but the inner one becoming gradually thicker 

 and thicker, till finally it results in a pyriform, short-stiped con- 

 ceptacle. The external process is now found at the lateral margin 

 of the conceptacle, fused to the wall of the latter. The apex of 

 the former is often found much more pronounced than the ter- 

 minal end of the conceptacle, or, not infrequently, it takes place 

 just upon the latter and thus the conceptacle seems to have 

 apiculated. 



The apparent difficulty in reckoning Cor. sessilis and Cor. 

 capensis in the genus Corallina lies in the point that the con- 

 ceptacles are not jointed. This character may suggest an extreme 

 form of Alatocladia in some way. We must, however, remember 

 that there are many conceptacles found in the Officinales without 

 any joint to separate them from the axial articuli. Cf. " Cor. 

 ver. Port Renfrew." PL LVI. fig. 16. I believe it will be safest 

 to group these species under the present section, as I could not 

 discover any conceptacle upon the surface of the hexagonal articuli 

 of the axial stems. 



Corallina palmata Ellis et Sol. is a doubtful plant, as has 

 been stated before (p. 26). Grunow mentions Arthrocardia pal- 

 mata Aresch. in the list of plauts collected during the Novara 

 Expedition (p. 79) : and remark that the plant is similar to 

 Cor. flabellata KÜtz. illustrated in Tab. Phyc. VIII. Tab. 60. 

 The specimen bearing the name of " Corallina palmata Ellis et 

 8oL.," kept in Suringar's Herbarium, accords very well with 

 the description of Cor. |9a/ma^a Ellis et Sol. and at the same 

 time with the figures of Cor. flabellata KÜtz. 1. c. It is far 

 from doubtful that this species should be better placed near Amp. 

 corymbosa under the section Arthrocardia. 



Most of the other doubtful speciee in the above list are 



