- 36 - 



gener. t. 60, f. IV. Hypnca Rissoaiia ]. Ag. Alg-. Medit. p. 1 50 ; Id. 

 Sp. Alg. II, p. 448; Id. Epicr. p. 563 ; Kuetz. Sp. Alg. p. 758 ; Id. 

 Tab. Phyc. XVIII, t. 19, f. {-\.-Hypnca dcnudata Kuetz. Tab. 

 Phyc. XVIII, p. 9, t. 21. f. II. 



Hab : Often entangled on the branches of Sarrassitm below the 



o o 



low water-mark. Prov. Tosa, Hachijo Isl., Prov. Sagami, Prov. 

 Uushyu, Prov. Kadzusa ; Riukiu (Kuroiwa, Heydr.). 



Remarks : The present plant is usually found washed ashore in 

 sheltered places after a heavy blow, where it usually occurs forming 

 a very large, intricately twisted roundish mass. Our plant seems to 

 be larger, thicker and firmer than the European plant, and the sub- 

 stance is snbcartilaginous, not adhering to paper in drying. With us 

 cystocarps have not been seen and I am in doubt whether the 

 plant will not multiply by the division of frond. 



PL. LIX. Fig. 7 ' portion of the frond of Hypnca mitsciformis 

 (Wulf.) Lainour., disentangled from an intricated mass, \. 



PL. LX, Fig. 7-11. Fig. 7: a branch, \. Fig. Q: cross-section 

 of a branch, \*. Fig. 9: cross-section of an inrolled portion of branch ; 

 tt, the inner ; b, the outer side, 1 1 6 . Fig. 10 cortical layer of the 

 portion marked b in Fig. ga, ~'^. Fig. 11 cortical layer of the por- 

 tion marked a in Fig. 9, 2 ~. 



Hypnea musciformis (Wulf.) Lainour. 



% LIX H )K, 7 1 ; f& LX H JK, 7-11 H. 



- 31 dfe ^, - T ffi a M3MU / flS 7 J5> * ^ & ?, 10-15 cm 75 

 jy _t S y. fig. - & s 7 &% ? ft m *, t - T SB ' * ' 



