pinnae) (fig. 10); but this rule is often disturbed, there being 

 some irregularities so as to intervene one or three articulations 

 (fig. 1 1 a, I)). On the surface of branches t\vo weakly developed 

 moniliform filaments or hairs are seen at articulations (fig. 7). 

 That these hairs are really simple moniliform branch consisting of 

 2-4 articulations and remaining in non-developing state is seen in 

 a very young branch which is composed of simple moniliform row 

 of cells and still having no cortical cell (fig. 6). On the cross- 

 section of branch a large central axis is seen surrounded by 6 

 larger cells, two of which standing at frank side give rise to pinnae 

 and other remain either undeveloped or grow to simple monili- 

 form hair-like branch consisting of a few articulations. Cortical 

 layer is produced as rhizoid-cells arising from the basal cell of 

 lateral branches (fig. 6). Tetrasporcs produced on the terminal 

 cell of pinnule, roundish, tripartite. 



Hab. : Kotosho (Taiwan). 



PI. CXCVIII, fig. 5-1 1. Fig. 5: frond of DasypMla plumari- 

 oidcs Yendo, -J-. Fig. 6 : young shoot, - 3 p. Fig. 7 : pinnae and 

 moniliform branches, ^. Fig. 8 : one of pinnae, s ^ 3 -. Fig. 9: cross- 

 section of branch, -^-. Fig. 10-11 : diagramatic illustrations of mode 

 of branching ; /, non-limited branch ; k,k limited branches or pinnae. 



Gelidium crinale (Turn.) Lamour. f. latifolium n. f. 



Norn. Jap. : Itotengusa. 



PL. CXCVIII, Kg. 12. 



Fronds linear, erect, standing from creeping and rooting 

 stolon, filiform and naked below, 5-6 cm. long, dilating to narrow- 

 linear segments; 1-1.5 mm. broad which give rise to slender 

 similar-shaped linear branches irregularly arising in alternate, 



