183 



were really carpogonia. Such dubious cases 

 are shown in fig. 105 C, D; I have been in- 

 clined to interpret them as carpogonia, since 

 they had the same refringent and colourless 

 contents as the others. In some cases the 

 supporting cell in the vertical filament had 

 a similar appearance (fig. 105 C, D) (Comp. 

 Petrocelis Hennediji, p. 178). The undermost 

 cell in the carpogonial filament is sometimes 

 connate in its whole length with the suppor- 

 ting filament. Sporogenous filaments were 

 not seen in connection with the carpogonium, 

 but they were found fusing with the auxili- 

 ary cells. These cells are intercalary in the 

 vertical filaments and differ but little from 

 the other cells, possibly sometimes swollen before fusion. The sporogenous filaments 

 run principally in a horizontal direction, but sometimes give off upward branchlets, 



Fig. 105. 



Cruoiia pcllila. Carpogonia A, four-celled carpogo- 

 nial branch, fi, two-celled carpogonial branch. C, 

 prcsiHiied carpogonium sitting directly on the ver- 

 tical filament; the snpporting cell and the next fol- 

 lowing have the same homogenous and refringent 

 contents as the carpogonium. D, Carpogonia given 

 otf directly from the vertical filament. A, D 300: 1; 

 B, C 300 :1. 



Fig. 106. 



Cruoria pellita. A, two-celled carpogonial branch. B, filament with a somewhat swollen cell *, possibly an auxiliary 

 cell. C, auxiliary cell fused with sporogenous filament. D, similar; the sporogenous filament has given otT a branchlet 

 upwards. E, auxiliary cell fused with a sporogenous filament which has given ofi' two upwards directed branchlets. 

 F, auxiliary cell in connection with an incompletely developed eystocarp. G, ripe cystocarp; the pits connecting 

 the auxiliary cell with the neighbouring cells in the vertical filament are marUed with ax. c, carpogonium; a, 

 auxiliary cell; s, sporogenous filament. A— F 390:1. G 300:1. 



