March, 1917.] X. YENDO.— NOTES ON ALGAE NEW TO JAPAN. VI 85 



Distribution. Guinea; St. Thomas Island ; Manila ; Canary 

 Islands ; Red Sea. 



Hypnea flagelliformis Grey. 



in J. Ag. : Alg. Liebra., p. 14.— J. Ac. : Spec, p. 446. — Id. : Epi- 

 cris, p. 562.— De Toni : Syll. Alg. IV, p. 476. 



? = Hypnea Harve vi Kiirz. : Spec, p. 760. — Id. : Tab. Phvc XVIII, 

 Taf. 28, fig. I. 



I identify our specimens with this species after consulting 

 the original in the Agardhian Herbarium. The species is 

 characterized by having thick axial stem (in one specimen about 

 3 mm in diameter) and sparing lateral branches nearly as thick 

 as the axial. The matured parts of frond is densely coated 

 with slender, simple or divaricated spinules of about 1 mm in 

 average length. Tetrasporangia are formed at a lower part of 

 spinulc, moderately swollen, leaving a short sterile portion as 

 pedicel. As the species has not been published with illustration, 

 the figure accompanied, though brief, may help to catch the 

 peculiarity of the species (Fig. 3). 



H. simpliciuscula Oram, which is described and illustrated 

 in De Tom's Sopra trc nuove Algae mar. Giappon, p. 343, t. 

 II, fig. 20-30, has a close resemblance to the present species. 

 Its stichidial spinules, however, greatly differ in shape from 

 those of our plant. In his Nippon Sorui Mci-i, Bd. I, p. 41, 

 OKAMURA himself has brought his species under //. sctictilosa J. 

 A<;., and in its second edition It is nowhere mentioned. 



Locality. Echigo Prov. (R. Kobayashi, Nos. 12, 26, t6 ; 

 M Xakamura, Xo. 84). 



Distribution. India. 



Chrysymenia Enteromorpha Hary. 



Ner. Bor. Amir. II. p, 187. J. A.o. : Bpicris, p. 325. ( <>m 

 llui. i). el Setch. : Phyc. B01 -Amer., No. 386. — De Tom: Syl 

 Alg. IV, p. 545. 

 "Hajoaaficton Wrightll Hary.: Cfaarac. of New Alg., p, 332. 



