148 



ing out or variously sinuated when old, attaining the size of 7-9 

 cm. in breadth, attached to the substratum by fine filaments emitt- 

 ed from more or less broader patches on the undersurface, solid, 

 very elastic and somewhat firm ; utriculi slender and cylindrical 

 with a thin-walled roundish top, ca. 2 mm. long, in aver. 188 ;j. 

 broad, 7-10 times as long as broad; surface of the frond glabrous 

 and velvety and the substance firm and gelatinous. 



Hab. : At the depth of 2-3 fathoms. Provs. Hyuga, Satsu- 

 ma and Hizen, Amakusa Isl., C. Shiwo (Prov. Kii), Prov. Shima. 



Desci'ip. : Fronds globular, ovoid or obovoid when young 

 2-3 cm. in diam., or irregularly protubelant from the beginning ; 

 as they grow in size, some become uniform below, some extend 

 more or less laterally or more and more becoming irregularly 

 proliferating or variously sinuated or tuberous, attaining the size 

 of 7-9 cm.- in height and breadth. Fronds seem to grow on gravels 

 stones, corallines etc. by emitting root-filaments either from one 

 spot of the undersurface or from several flecks and as they increase 

 in size, rooting flecks are increased in number. On cutting the frond 

 into two, the peripheral portion incurves with a strong force. Frond 

 is not hollow within, but solid, the inner cavity being densely filled 

 up with hyphoid filaments running downward from cortical utriculi and 

 with abundant mucilaginous mass. Utriculi are slender cylindrical 

 with a thin-walled globular top, ca. 2 mm. long with an average 

 breadth of iSS ,u and 7-10 times as long as broad. They branch in 

 the midway or a little below ; and from this mode of ramification 

 it may be inferred that the frond grows in size on all sides. The 

 surface of irond is velvety and the substance is firm and compact, 

 very gelatinous to touch and the plant firmly adheres to paper in 

 drying. Colour herbaceous green with shining lustre in drying. 



