248 MR. E. M. HOLMES ON MARINE ALGJE FROM JAPAN. 
indigenous species of that island until a century afterwards, in 
1864, by Thwaites in his * Enumeration of Ceylon Plants,' where 
it is called Hypolythrum costatum, Thw. Probably it is a some- 
what rare plant, though its area of dispersion is very large, 
the species extending to Singapore, Penang, Java, Australia, and 
Samoa. On the last-named island the fruits are eaten by the 
natives. 
New Marine Alge from Japan. By E. M. Horwgs, F.LS., 
Curator of the Museum of the Pharmaceutical Society of 
Great Britain. 
[Read 21st February, 1895.] 
(Piarres VIL.-XIL) 
UwrrL early in the present century nothing was known of the 
marine Alge of Japan; and comparatively little progress has 
since been made in the study of the Japanese Marine Flora. 
Our own countryman, Dawson Turner *, was one of the first 
to describe the Japanese Algw brought home by the Russian 
expedition of Krusenstern, consisting chiefly of species of Sar- 
gassum. In 1843+ Kiitzing described others from the same 
source. In 1856-591 Harvey published descriptions of some 
Japanese Algs collected in two American Expeditions to China 
and Japan. In 1866 Martens published an enumeration of all 
the marine Algæ of Japan already known, adding a few species 
collected during the Prussian Expedition to East Asia. Elaborate 
memoirs were published by Suringar || from 1868 to 1874, 
* Turner, ‘Fuci sive Plantarum Fucorum Generi .. . historia,’ 1808-1819. 
t Botanische Zeitung, i. p. 53. 
Í Perry, ‘ Narrative of the Expedition of an American Squadron to China 
and Japan, 1856 ; Harvey, “ Characters of New Algs collected by ©. Wright 
in the North Pacific Exploring Expedition under Capt. J. Rodgers," in Proc. 
Amer. Acad. vol. iv. 1859. 
§ ‘Die Preussische Expedition nach Ost-Asien: Tange,’ 1866. This enume- 
ration omits, by some oversight, the 54 Algæ collected by O. Wright and pub- 
lished by Harvey. 
| *Algarum japoniearum Index,” Ann. Mus. Bot. L.-B. iii. p. 256. ‘Note 
sur l'hist. des faisceaux chlorophylliens de la Spirogyra lineata,’ 1868. Alge 
Japonice, Mus. Bot. Lugd.-Batav., 1870. Musée botanique de Leyde: * Illus- 
trations des espèces et formes du Genre G/oiopeltis; 1871-72. ‘Illustrations 
des Algues du Japon,’ 1874. 
