274 THE BOTANICAL MAGAZINE. [Vol xxix. No. S46. 



= Undaria distans Miyabe and Okam. in Miyabe Re- 

 port on Fisheries of Hokkaido Vol. Ill, p. 57, PI. 

 XXVI. 

 Stem elongated, subequal to the length of deeply pinnated 

 lamina with large sporophylls limited at the base of stem, with- 

 out proliferations. 



This form is widely found within our eountry especially in 

 the northern districts north of Inuboye Zaki, and in the deeper 

 waters of the southern parts. 



hoc. : As a whole the range of distribution is same as f. typica, 

 but in deeper waters in southern parts and more common to- 

 ward the north of Inuboye Zaki, western and southern coasts 

 of Hokkaido from Mororan to Riishiri Isl., coast of the Japan 

 Sea ; eastern coast of Chosen. 



Besides these two forms Prof. Yendo adds one more i.e. : — 

 f. narutensis : Stipe shortest, with a less folded sporophylls 

 which become confluent with lamina and proliferating 

 sterile ligules from tne margin of sporophylls. — Yendo 

 Devel. of Costaria etc. p. 708. 

 This form, however, may be considered as an extreme case 

 of f. typica, and if one strictly distinguishes one from the other 

 many more format may be enumerated, but other than the two, 

 f. typica and distans, are of less importance. 

 2). Undaria undarioides (Yendo). 



= Hirome undarioides Yendo Three New Mar. Alg. from 

 Japan p. 99, PI. II, f. 1-2, PI. III. f. 4-9. 

 Root fibroso-fasciculated, distichously arising at the begin- 

 ning. Stipe shortest (0.5 — more than 20 cm.), subcylindrical at 

 base or compressed, soon ancipite and complanated above, more 

 or less winged ; lamina thin membranaceous, midribed, bullato- 

 rugose, oblongo-ovate or cordate, entire or subpinnatifid. Sori 

 on both sides of the midrib at the beginning on both surfaces, 

 afterward becoming confluent towards the base of lamina and 

 often at the same time continuous with those on the wings. 



hoc. : On rocks at the depth of 1-5 fathoms below the water 

 mark (Kii). Prov. Iki (?), Prov. Kii, Hamajima and Goza (Prov. 

 Shima), Nemoto, Funakata and Sunosaki (Prov. Boshyu). 



