14 



W. H. PEARSON. 



[NO. 9. 



64. 14. Ditto X 24. 15. 16. Innermost bracts X 24. 17. 

 Bracteole X 24. 18. Perianth x 16. 19. Cross-section of 

 perianth x 16. 20. Mouth of perianth opened x 24. 21. 

 Perigonial leaf x 24, 22. Antheridium X 24. 



15. Tylimanthus africanus n. sp. 



Dioica, caespitosa, pusilla. flavo-virens. Caules ramique 

 prostrati ascendentesve, irregulariter ramosi, stoloniferi; ra- 

 dicellosi, folioliferi. Folia imbricata, ad angulum 30 pa- 

 tentia, ovalia, obovata oblongo-subquadratave, apice subser- 

 rata bifidave, margine tam antico quam postico basi paulu- 

 lum reflexa. Cellulae subquadratae, chlorophyllosae, trigonis 

 minutis nullisve. Foliola minuta, late subulata, integra. 



Dioicous, caespitose, small, of a remarkable light yel- 

 lowish-green color. Stems and branches prostrate or ascend- 

 ing, irregularly branched, 10 to 14 cells in diam. 25 to 30 

 cells round. cortical cells rather smaller and more ligneous; 

 stoloniferous, beneath radicellose and folioliferous. Leaves 

 imbricate except on the younger branches. patent at an 

 angle of 30 (from 20 to 40 °), subexplanate. oval. obovate 

 or oblong-subquadrate, with the apex subserrate or simply 

 bifid in the younger leaves, slightly concave, with both mar- 

 gins a little reflexed, entire except near to apex; cells 

 smallish, subquadrate, chlorophyllose; walls moderately thick; 

 trigones small or wanting. Perigonial leaves in the middle 

 or apex of branches having in front a large basal lobule, 

 within which are one or two, round antheridia. Underleaves 

 everywhere present, very small, attached to each alternate 

 leaf, broadly subulate, entire, or rarely with an indistinct 

 lateral notch. 



Obs. Dr. Spruce writes ..The Playwclnla zarmentosa 

 South Africa Lindenb. Sp. Hep. Tab. XVIII may possibly 

 be a Tylimanthus allied to your plant but I hope quite 

 distinct." 



I have not had the opportunity of examining original 

 specimens of Pl? sarmmtosa but Lindenberg^ figure shows 



