= ge 6S 7 el ae 
161 
CHINESE MARINE ALGA. 
By Eruet 8. Gepp (née Barron), 
(PuatEe 460.) 
Tue following short list is founded on two small collections of 
marine alow from the coasts of China recently added to the National 
Herbarium. One was ating at Wei-hai-wei by Dr. P. Hamilton 
Boyden, Surgeon in the Royal Navy, and the other at Swatow by 
Mr. Edward B, Howell, of the Chinese Maritime Customs Service. 
Few ie have been hitherto recorded from China, though the 
marine flora of Japan _ oe considerable attention from 
Japanese and other sie 
As regards the Veatinie e the coast at Wei-hai-wei, where the 
pe of the two collections was made, it will be of interest to aha 
. Boyden’s letter :—“ The ict hich struck me most was the 
abide of large seaweeds—e and Laminaria; Beastly 
this may be due to the sbatteree’ situation of that part of Lin- 
kung-tao Island, where the seaweed [Ceramium Boydenii] was ott 
but even on the seaweed side of the ae there seemed to be 
few. This may be due to the coldness of the water it the 
absence of a warm current, these waters beitig outside the influence 
of the Kurosiwo or Japan stream. The specimens were got in pools 
left by the tide in the rocks, which were for the most part flat. On 
the seaward side the rocks are very precipitous, shelving down 
several hundred feet. The rocks are metamorphic, consisting of 
beds of quar oo gneiss, crystallite, and se e cut across by 
ock ite. Mic 
dykes of volcanic rock and grani suits everywhere. 
Maes the peer were found the rocks aie mainly granite and 
gneis 
Of the Swatow algal flora Mr. cc writes that the seaweeds 
are few, and there is but little v 
The most ‘eit sting plants aa as two collections are a new 
species of Ceramium, ¢ Boydenii, a new a ee and Polysiphonia 
japonica Harv., which has been ignored in most systematic books. 
The special points of interest of these pect will be found under 
their respective names. 
As will be seen, nothing remarkable is here added to what is 
twenty-six species here recorded, eight are either not named 
cally or are named with a query, owing to their gore condition. 
Of the remaining eighteen, two are new, two are cosmopolitan, 
twelve have been siaerddod from J apan, and the remaining two from 
other parts of the North Pacific. 
I am much indebted to my husband for assistance and sugges- 
va in the preparation of this list. 
. Rrvunaria atra Roth. Wei-hai-wei, Boyden! 
ae gr. Distr. Arctic, Mediterranean, Caspian, North Atlantic, 
North Pacific, Japan. 
Journa or Botany.—Vot. 42. (June, 1904.) M 
