- 131 



becomes thicker and thicker below, and in the thicker portion of branches 

 the central axis is thickly covered with longitudinally running rhizoidal 

 cells, and the cortical layer of a thicker branch consists of filiform 

 cells. Pinnulae throughly ecorticated, arise alternately from every 

 articulation of pinnae, and pinnellae are in similar arrangement. As the 

 age of plant proceeds, pinnae grow up to branches, and pinnulae to 

 pinnae. Length of articulation is subequal to or a little longer than the 

 diameter through the whole length of frond. Tclrasflores produced on 

 pinnellae, sessile, tripartite. Cystocarfrs unknown. Colour pinkish-r^d. 

 Substance membranceous and the plant imperfectly adheres to paper in 

 drying. 



Hab. : Prov. Awa, Kii, and Shima. 



PI. CLXXXIII, Fig. 1-9. Fig. 1 : frond of Eufitilota articiilata (J. 

 Ag.) Schm., j. Fig. 2: upper portion of branch showing the arrangement 

 of pinnae ; a, apical cell, -^-. Fig. 3 : terminal portion of fig. 2 showing 

 the arrangement of pinnulae and beginning of rhizoidal cells from 

 basal cells of pinnulae ; a, apical cell ; i ~. Fig. 4 : cross-section of the 

 basal portion of branch, ^-|^. Fig. 5 : cross-section of the upper portion 

 of stem, -^-. Fig. 6 : cross-section of the lower portion of stem, I ^. 

 Fig. 7 : longitudinal section of stem shown in fig. 6, J^. Fig. 8 : 

 surface-view of stem ; cells obliquely running are those from the base 

 of branches, 1 ^-. Fig. 9: tetraspores formed on pinnellae ^p. 



Asparagopsis hamifera (Harlot) Okam. 



Norn. Jap. : Kagi-non. 



PL. CLXXXIII, Fig. 10-11 ; PL, CLXXXIV, Fig. 10-16. 



Bonnemaisoiiia hamifera Hariot Alg. de Yokoska p. 223 ; Okam. 



Nippon Sorui-Meii (2nd. ed.) p. 62; De Toni Syll. IV, p. 768.- 



