KUNGL. SV. VÉT. AKADEMIENS HANDLINGAR. BAND 63. N:0 8- 



49 



pleurospora in Anal. Algol. Cont. V t. II f. 14 c, this having a structure unlike everything 

 I have seen in the family. In his latest treatment of this lie removed D. pleurospora 

 to Pteridium, but with this it has little in common; Agardh's opinion, however, caused 

 Cotton to describe Delesseria Davisii of Dickie, not Hook. Fil. et Harv., as Pteridium 

 Bertrandii. I have seen all the material upon which this species was based, and I find it 

 identical with my N. condensatum. For comparison a section of the stipe is figured, 21g. 



^QCh 



^»Äi^» 



Fig. 22. Oonimophyllum australe: a minute frond, b apex of older frond, C male frond with spermatia, surface view, d — e 

 section of male frond (d thickest part, e margin); f spermatange mother-cells, g formation of spermatia. d X 240, 



other figures X 480. 



I am not sure that Dickie was mistaken as he named the Kerguelen specimens 

 D. Davisii. Truly, at a superficial glance they seem very distinct. D. Davisii is well 

 figured in Fl. Ant. II t. 175 from a Cape Horn specimen, representing the type. In 

 Herb. Kew are a couple of specimens from Falkland, named D. Davisii by Hooker. 

 One of them, from Berkeley Sound, is retained with hesitation under that species by 

 Cotton. It is more densely branched t han the Cape Horn specimens and more like 

 N. condensatum. Another from »outer sea coast, Cape Pembroke», named D. dichotomal, 

 has the old midrib covered by leaflets. Both have the same structure as N. condensatum 

 or P. Bertrandii. 



K. Sv. Vet. Akad. Handl. Band 63. N:o 8. 7 



