76 



to touch, and the plant does not adhere to paper, but in reimmersing 

 in the water filaments become very soft. Colour bluish-green. 



Hub. : On rocks near high tide. Hyuga, Hizen, Tosa, Boshyu. 



In identifying my plant for Kjellman's SiflhoHodadus fascicttllits I have 

 not seen the authentic specimen, but from the illustrations and descriptions 

 given by him I think I am justified in doing so. The locality, Yokohama, 

 where he obtained his material is very near to Boshyu where our mateml 

 was collected. Prof. Yendo recently described a new species, Cl. coriucca, 

 which he remarks as easily distinguishable from other related species by 

 Uie thickness of the wall (he measures 10-40 ,) His specimens were 

 collected at Provs. Boshyu and Saga ni, Goto Island, etc. I also collected 

 the material from the similar loca ';ies mentioned by him, and though 

 I have not seen his specimen, ] have in my herbarium one col- 

 lected by him at Boshyu in early 'Hate. On examining my material 

 which has been formerly collected by him at Boshyu, some have thick 

 wall measuring 33 /'., but the thickness is not uniform all over the frond 







10-20 being more common, and thicker part is limited to the lower older 

 portion or root-like filaments ; and the most part of the filaments whose 

 basal portion has thick wall remain thin. I have measured the thickness 

 of 4.6-14 /> in the material from southern parts as Hyuga and Tosa 

 (equally warm places as Goto Island) ; in the warmer part thin-walled 

 frond seems to be more common. Provs. Boshyu and Sagami (including 

 Yokohama) are most provably the northernmost limit of the distribution 

 of this plant. 



PI. CLXIX, Fig. 1-7. Fig. 1: portion of the expanded mass of 

 Cladophoropsis .faxcicnlalHS (Kjellm.) Borg. from Hyuga in nat. state and 

 size. Fig. 2 : frond (from Boshyu) isolated, }. Fig. 3 : frond (from Hyuga) 

 isolated,}.; r, root. Fig. 4: lower rooting filaments (from Hyuga), 



