KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 63- N:0 8. 89 



South Patagonia: Fitzroy Channel, sublit. 13 — 14 m, gravel (St. 17, 

 18. 4. 08, % ). F u e g i a : Slogget Bay, in beach drift (St. 47 b, 16. 3. 09, ©). Fal li- 

 la n d Islands: Westpoint Island, small specimens in tidal pools (St. 8, 5. 12. 07, 

 ©); Sparrow Cove, 11 — 13 m, shells and gravel (St. 9, 10. 1. 08). 



The cystocarps liave not been observed before: they are very like those of Phy- 

 codrys or Nitophyllum, with a large fusion cell connected with some cells of the central 

 lamella, and horizontal, pectinate sporogenous filaments (fig. 16 b). 



Agardh's opinion that the branched appendages of the margin are transformed 

 into sporophylls is not correct; truly, they are dwarf segments, homologous with normal 

 marginal lobes, but proper sporophylls are missing, and I have seen no example of one 

 of these teeth developing into a larger lobe or leaf let, in f act, the apical cell of these appen- 

 dages soon becomes inactive. 



Agardh based his genus Glossopteris on the mode of branching, position of sori 

 (called »single») etc, but in his long description we shall not find any valid reason for the 

 creation of a new genus, if not the presence of the appendages, to which he paid but 

 little attention. As he compares Glossopteris with Hypoglossum rather than with any 

 other genus, it is obvious that he misjudged the position of these genera. Nienburg 

 1. c. pointed out the close relations between Glossopteris and Phycodrys. They have all 

 the more important characters in common. As the name Glossopteris cannot be used, 

 Cladodonta was proposed above. It is a monotypical genus and differs from Phycodrys 

 by the polystromatic lamina (fig. 16 c), the shape of the marginal branches, and the 

 peculiar appendages (fig. 16 a). Similar structures have been found in certain Nito- 

 phylla, as N. erosum Harv., and also in Delesseria denticulata Harv., the type of the genus 

 Heterodoxia J. Ag. 



Distribution: S. Patag. (first record), Fuegia, Falkl. 



Anisocladella nov. gen. 



Fröns e margine distiche decomposito-pinnata, angusta, costata, nervis lateralibus 

 nullis, margine eximie nec non alterne serrata, dentibus pro latitudine f rondis majusculis. 

 Plantae sexuales ignotae. Tetrasporangia soros supra costam confluentes formantia, 

 triangule divisa. Crescentia apicalis ut in gen. Phycodrys, sed segmenta lateralia cellu- 

 larum centralium inaequalia, uno (dextro vel sinistro regulariter alternante) excrescente, 

 dentem vel raraum formante, altero valde reducto; margo igitur alterne serratus. Struc- 

 tura costae polystromatica, medulla cellulis maximis stratum singulum formantibus, 

 cortice parvicelluloso radiato. 



Genus Phycodrydi affine, crescentia singulari diversum: ex eo nomen. 



The mode of growth presented by Anisocladella has been described and figured by 

 Nienburg, 1. c. p. 197 under N euroglossum Andersonianum J. Ag. His analysis of the 

 apex is not satisfactory, but his conclusion that the type is, in all important points, like 

 Phycodrys sinuosa is quite correct. N euroglossum (type: N. Binderianum Kutz. ) is a 

 widely different genus, and N. Andersonianum must be removed from this and referred 

 to Anisocladella. 



