FHWXOLOnrS. 189 



slender habit, shorter stems, with closer upper leaves, which are 

 not so deeply divided, margin spinulose-dentate, stipules larger 

 and spinulose-denticulate. 



From Prioiiolohiis Turiicr'i (Ilook.) by absence of any lateral 

 branches, presence of stipules and texture of leaves, which is not 

 guttulate. 



Dr. Spruce conjectured that the inflorescence might be 

 dioicous, but Herr Linipricht has found copiously fertile plants 

 which prove it to be monoicous. 



All the specimens I have been able to examine were barren ; 

 the description of the lertile plant is taken from Limpricht. 



Description of Plate LXXIII. — Fig. 1. Plants natural size. 

 2. Portion of stem, postical view x 85 (Cornwall, Curnow and 

 Davies). 3-5. Branch leaves x 85 (ditto). 6-8. Leaves x 85 

 (ditto). 9-12. Ditto x G4 (Italy, Carestia). 13, 14. Ditto x G4 

 (Grascony, Spruce). 15. Portion of leaf x 290 (Cornwall, 

 Curnow and Davies). 16-19. Sti[)ules x 85 (ditto). 20. Stipule 

 X 64 (Italy, Carestia). 21. Ditto x 64 (Grascon}', Spruce). 

 22. Ditto X 85 (Ashdown Forest, G. E. Davies). 



Genus 15. PRIONOLOBUS, >S/>/v/rY. 



Jnngermania, Hooker, Brit. Jung. t. 29 (I SIC). 

 Anihelia, Dum. Recueil, p. 18 (1S;}5). 

 Cephalozia, Lindb. in Journ. Linn. Soc. viii. (187P>). 

 Prionolobns, Spruce, Hep. Am, et And. p. i>OH (188")). 



Acrocarpous, fertile branches sometimes al)breviate, often 

 elongate. Branches all lateral, very rarel}^ with an occasional 

 postical one. Leaves dentate, complicate, pectinato-distichous. 



