﻿77 



which the pedicel-cell stands, is small and sustained below by a 

 stratum of stellate cells which form the bottom of spore-cavity 

 and the inner anastomosing layer of pericarp. Gonimolobes are 

 successively formed. Spores are almost simultaneously developed 

 in all the articulations of spore-filaments and are densely aggre- 

 gated without any conspicuous order. A large carpostome is 

 opened on the apex of the pericarp. 



Colour dull red, fading to greenish on standing long in water. 

 Substance cartilaginous and the plant rather imperfectly adheres 

 to paper in drying. 



Hab. On rocks between tide marks, often in tide-pools 

 and sheltered places. Tosa， Shima, Isls. Kozu - shima and 

 Oshima (Pro v. Izu), Shimoda (Prov. Izu), Salami, Boshu, Kazusa. 

 Fruits 一 】ate in Spring. 



In De Ton i s Syll. Alg. 1. c, the present species is put 

 under " Species incerte ； but it is beyond any doubt that it is 

 a distinct species related to Lomeidaria articulata [Htuis.) Lyngb. 

 From the latter, however, the present plant clitfers in consistence, 

 mode of ramification and length of articulations. 



Plate XXVI. Fig. i : a few of fructified fronds of Lomcii- 

 taria catenata Harv., \ ； for the sake of conveinence, tetrasporic 

 and cystocarpic fronds shown as if to grow in one and the same 

 tuft. ― Fig. 2 : portion of elongated frond bearinp- cyst oca rps, 

 \. 一 Fig. 3 : portion of ramuli, showing tetrasporic sori, \. — 

 Fig. 4 ： longitudinal section of frond, showing dissepiment, 

 slightly magd. 一 Fig. 5 : longitudinal section of cystocarp, ： や. 一 



