204 Rhodora [NOVEMBER 
39. Grateloupia ramosissima Okamura. 
21. Polysiphonia ferulacea Suhr. 
48. Isoptera regularis Okamura. 
2,3. Dasya pedicellata Ag. 
41-47. Corallina officinalis L. 
40. Melobesia sp.? 
47. Sargassum sp.? 
In all 27 determined specifically, 3 only as to genus. Not an ex- 
tensive list, but 17 of the 27 are reported for the first time from China. 
If we except the genus Sargassum, for reasons to be stated later, only 
28 can be safely retained from older lists, giving a total of 45. Poly- 
siphonia ferulacea is epiphytic on Gracilaria confervoides, Goniotrichum 
elegans on Symphyocladia gracilis and Colpomenia sinuosa on Gelidium 
australe, The Gelidium is a quite slender and delicate appearing 
plant, but apparently not distinct from the coarser form of California 
and Australia. Laurencia obtusa is taken in a broad sense; in all 
probability several species now pass under that name, but we are not 
in a position clearly to distinguish them; L. botryoides and L. thuyoides, 
recorded on the Chinese coast, probably should be included in L. 
obtusa, in this sense. Antithamnion cruciatum, Pleonosporium Bor- 
reri var. fasciculatum and Dasya pedicellata, well known North Atlantic 
plants, now appear for what seems to be the first time in the Pacific. 
In each case the characters are quite those of the Atlantic plant. 
Our previous knowledge of Chinese marine algae is very scanty. 
The first work of importance is that of Martens! in which are included 
previous records; unfortunately most of the older records are rather 
uncertain and cannot safely be compared with the present list. 
The next list is by Debeaux.? This includes 26 species from Chefoo 
and Hongkong. The author was not a specialist in algae, and most 
of his identifications were made by René Lenormand, and unless con- 
firmed from other sources, cannot be safely accepted. More recently 
Mrs. Gepp has published a list? containing 22 named species, 2 of 
them with an "(?)" and 6 only generically determined, from Wei-hai- 
wei and Swatow. 
1 Georg v. Martens. Die Preussische Expedition nach Ost-Asien. Botanische Theil. Ber- 
DO an Algues marines recoltées en Chine pendant l'expédition francaise de 1860-62. 
Actes Soc. Linn. de Bordeaux, Vol. xxx, 1875. 
* Ethel S. Gepp. Chinese marine algae. Jour. of Bot., Vol. XLII, p. 161, 1904. 
