Microcladia elegans Sp. no v. 



Mom Jap. ： Sa-icla. 

 PL. I. Figs. 1-10. 



Mict ocladia gland tilosa {?) Grev., Okam. On Microcladia and Car- 

 poblepharis (The Bot. M:ig., Tokyo. Vol. XIV. 1900) p. 4, PI. I， 

 Figs. 2-7. —岡 村， 日 本 藻類 名^， p. 233. 



Fronas linear, ancip] to-compressed, membranaceous, erect or ascending 

 from decumbent base, where the plant emits monosiphonous root-fibres 

 from the under-surface. Ramificatio}i alternato-pinnate along rachis, dis- 

 tichous, with patent axils ； ramuli and ramelli erect or erecto-patent 

 alternately arranged, dichotomous with bifid or slightly incurved apices. 

 Plant attains 4-5 cm, in height, with the bre;jdth of about 丄 mm. in 

 segments. Tctrasporangia somewhat regularly arranged in lonj^itudinal 

 row along either external or both sides of ramelli, roundish, cruciate or 

 irregularly triparted. Cystocarps sessile on the apex or side of ram uli, 

 provided with simple or forked, flat involucres. Colour red. In drying, 

 plant imperfectly adheres to paper. 



Structure of fraud : Around the central axis there are six ce lis 

 which form the bases of branches verticillately arising from the axis. 

 Those branches consisting of a row of a few roundish empty cells ascend 

 obliquely. Cells in thai: row become gradua'ly smaller upwards, and the 

 ultimate ones form the cortical cellules ； also the remaining cells cut off 

 minor ones towards surface of frond, and by further divisions they form 

 conical cells for the respective positions. 



In niy paper quoted above, I described the present plant under the 

 name oi /]/. glaudulosa Grev. with question mark, as I had not then 

 seen an}^ specimen of it. Later, Mr. Reinbold kindly sent me 



