TÎTF, FrCACE;E OF JAPAN. '[■''>^> 



Sarf/as.siini nijjponieuw Yrndo. 



Plate XVII. Fig. n-lO. 



rivlim. List of Fuc. of .Tap. 158. 

 Diagnosis. Kadioo filirillosa, rhizinis^^ loiiü;issimis, filiformilnis ; caule simplioi, 

 iîlifonni, uiidiquc raniis egredientibiis ; foliis liiieari-clavatis, deor.suiu 

 atteuuatis, ajjice acutis, immerse subcostatis, superioribus ramorumque 

 anoustis saîpe subulatis vel licmipliylloideis, integevrimis rarius bi- 

 tridentatis ; vesiculis fusiformibus in inferiore parte ramulorum paiicior- 

 ibus; receptaculis cylindraceis brève petiolatis in ramulo abbreviato 

 racemosis. 



Description of tlie species, The root is fibrous, consisting of 

 radially extending, filiform rhizines Avhich are sent out from the 

 very base of the frond without any obvious rule as to arrange- 

 ment. As far as our specimen shows, the primary stem of a frond 

 seems to be simple, that is, it does not ramify at the basal portion 

 to give rise to the members which corresj)ond to the principal 

 branches of other species. But very often numerous shoots are 

 found with their roots entangled together into a large mass. 



Stem is 1-4 feet long, filiform, smooth, often slightly 

 angulate, with short lateral branches spirally arranged on it. 

 The basal as well as the fulcrant leaves are linear-clavate, gently 

 attenuated below and acute at the apex. Some of the upper 

 leaves are often subulate above and slightly hemiphyllous. Most 

 of the leaves have a very insignificant immersed midrib. Leaf 

 margin is generally entire, often undulating and frequently with 

 one or two dentations. 



The lateral branches are short, measuring a few inches in 

 length, simple or slightly decompound, with a delicate, filiform 

 stem. The leaves on them are narrowly lanceolate or filiform, 



') In tlie same sense as Kjellmax used in "The Algne of tlie Arctic Sea." p. 238. 



