708 
Yendo .— The Development of 
which is never the case in the northern. From these variations we may 
distinguish three forms of Undariapinnatifida , Sur., thus :— 
f. typica. 
— Undaria pinnatifida, Sur. Illustr. Alg. du Japon, p. 77, PI. VI-VII. 
Ditto ; Alg. Jap., PI. X. 
f. distans, Miy. et Okam.; in Okamura, Nippon Sdrui Mei, i, p. 128. 
= A/aria pinnatifida , Harv. Charact. of New Algae (Proc. Amer. 
Acad., vol. iv, 1859), p. 329. 
= Ulopterix pinnatifida, Kjellm. ; in Kjellm. et Peters, Om Japans 
Lam., p. 275, PI. XI. 
= U 7 idaria distans , Miy. et Okam. Report on Fisheries of Hokkaido, 
vol. iii, p. 57 , PI. XXVI. 
Stipite longitudinem laminae profunde pinnatifidae subaequante, sporo- 
phyllis ad basin stipitis limitatis, majoribus, nudis. 
Notice. —The present form has once been mentioned with specific 
rank by Miyabe, but afterwards as a form by himself and Okamura jointly. 
In both cases the diagnosis has been incompletely given, in Japanese only. 
I hope these authors will publish their discoveries in full detail in a form 
universally accessible. The Japanese characters are, unfortunately for us, 
unfamiliar to scientific circles. The present writer feels obliged to mention 
the manuscript names. 
f. narutensis. 
Stipite brevissimo, sporophyllis pauci-undulatis lamina confluentibus 
e margine ligulas steriles proliferentibus. 
III. Laminaria. 
According to Miyabe, 1 there are three species of Laminaria in the 
vicinity of Otaru Harbour, viz. L. ochotensis , Miy., L. religiosa , Miy., and 
L. cichorioides , Miy. The former two are so nearly related that we very 
often meet with specimens to which either description may be applied 
equally well. In the sterile, and even more so in the young fronds, the 
specific distinction is almost impossible. 
In April, 1910, I collected numerous sporelings of a Laminaria 
at the Marine Station of Oshoro, near Otaru. The specimens may be 
either L. religiosa or L. ochotensis , but I cannot tell to which species they 
belong, for the reason above stated. 
An examination of the sporelings showed close agreement in various 
points with the results obtained by many former observers on various 
species of Laminariaceae,as well as with the above statements on Costaria 
and Undaria. Laminaria ,however, is separated from these two essentially 
by the presence of mucilage canals and the absence of cryptostomata 
1 Miyabe : Laminaria Industry. Report on Fisheries of Hokkaido, vol. iii, 1899, in Japanese. 
