MAKINK MAiJK OK I 1 1 1 . >< ' I I l>H S\II"N\I. \M\l;Mh | \ II.IMTION. 83 



DESCRIPTION OF PLATES. 



(Figfc 1-6, 8-19 an reproduced from Jour*, of But. ; an.) l-i.-. 7 from Uie Report n( the t \<Uional Antarctic 

 Bfjxdititm l.y km.l pertniMioa of the Editor of the Journal of Botany and the Trustees of tht 

 llnu-li MuMum respectively.) 



1. Monoftroma endivi^folium. Portion of plant, nat. ixe. Fig. 2. Caudate haul cell*, Men in 

 surface view, x 150. F >, Men in longitudinal section, x 150. Fig. 4. Upper part of thallus, 



transverae Motion, x 150. Fig. 5. Ditto, surface view : a, showing cells in twos and fours shortly after 

 division ; and b, when they are more evenly distributed, x 1 50. 



Fig. 6. I'hylloyiyiu timulant. Longitudinal section of lamina, showing central strand of hyphao, with 

 one ' trumpet-hypha " in longitudinal, and one in transverse view, x about 150. The cell* of the external 

 layer are in reality quadrate, thin-walled, with granular contents, and not, as shown here, rotundate and 

 densely obscured. Fig. 7. Outer part of longitudinal section of stijies, representing the cortex com]<oscd of 

 abort perpendicular rows of small quadrate cells, which, passing inwards, change gradually into a pluriseriate 

 subeortex of large round and oblong cells, which in turn merge into the medulla ; this latter is compoMd of 

 densely packed straight hyphaj ; only the external part of the medulla is shown, x 110. 



Fig. 8. L'allophyllit vari&jaia I Transverse section of thallus, showing endophy te, x 288. 



Fig. 9. Graniaria rimpUt. Train vene section of fertile frond, showing tetrasporangia, x 2881 

 Fig. 10. Outline of a sterile frond with eroded apex, nat. size. Fig. 1 1. Tronsrene section of thallus of same : 

 a, taken from margin, showing thick-walled cells; b, taken from middle of frond, where the cells have 

 much thinner walls. In b may be seen filaments of Kntoncma creeping over the cell-walls, x 150. In 

 fig. 11 the walls of the large interior cells are represented as two to four times as thick as they should be. 

 The largest of the interior cells have a diameter of 200 /t- The cortical cells measure 12-15 /i long by 

 6-10 M thick. 



Fig. 12. Hydrolapathvm ttephanoearpum. Portion of plant, nat. size. Fig. 13. Cystocarp, x 30. 

 Fig. 14. Section of eystocarp sessile on sporophyll, x 30. 



Fig. 15. Pteridium proli/trum. Branch showing proliferations from margin and midrib, nat. size. 

 Fig. 16. Tetrasporic branchlet with growing points, and showing, not cortex, but interior tissue, x 30. 

 Tig. 16A. Apex of lobe, surface view, x 150. Fig. 17. Tetrasiwrangia, surface view, showing their 

 subcortical position, x 350. 



Fig. 18. Floridea. Transvewe section of thallus, x44. Fig. 19. Portion of same, showing cortex 

 and interior cells, x 288. 



