size, diameter and ramification. In some, branches are more al- 

 ternately disposed, in others more dichotomous ; some have loose 

 and barren branches, others densely ramellosed. By such varia- 

 tions some samples show a remarkable external resemblance with 

 Cladosipliou dccipicns PL. LXXXIX. 



PL. CXLIV. Fig. 1: matured [frond ol".C/iorifaria Clado- 

 siphon Kuetz., \. Fig. 2 : portion of an older frond, -J. Fig. 3 : 

 young frond, \. Fig. 4 : growing apex of frond, (alcohol), ^ e . 



PL. CXLV, Fig. 10-14. Fig. 10: cross-section of frond, ^ 4 . 

 Fig. 11 : portion of the same ; /, inner cavity ; ^. Fig. 12 : 

 cross-section of frond bearing sporangia ; /, inner cavity ; 2o 

 Fig. 13: longitudinal section of frond ; /, inner caivty, -*J--". Fig. 

 14 : pit on longitudinal cell-wall, ^p. (All from alcohol specimens). 



Chordaria Cladosiplion Kuetz. 



fit CXLIV CXLV m IK, 10-14 ^. 



, 20-40 cm. Jj ^, 0.5-1.5 mm. 



ft v, 4&i^^*JK-^^^ja^^b * ~ * B. m 



^. t - fla / T SB - M ? S- # M - ffi u 1' -t ^,- - 



fin i- *- ? ?, x M > * ^- ^ IL *t > * ^ ^- ^ J3i iw * # 



S Hi It - ES - M IE 8H - ffi ?', g V - p] ^ 7 Ui -y, B* 

 ^ PS * /h t -^ * , 3* = ^/J ^ * '*?& y b ^- tfc & * tfc 



JH B 



