162 - THE JOURNAL OF BOTANY 
2. Unva Lactuca L. Ma-su, Swatow, Howell ! 
Geogr. Distr. Cosmopolitan. 
8. Copium rracitE Hariot. Wei-hai-wei, Boyden! 
Geogr. Distr. Japan 
4, Sargassum Hanaccwiisiti Ag. Swatow, after typhoon, Howell! 
5. Sareassum sp. Wei-hai-wei, Boyden 
6. Sargassum sp. Wei-hai-wei, Boyden! 
7. Cystopayrttum Tuunsereu J. Ag, Wei-hai-wei, Boyden! 
Swatow, Howell! 
The Wei-hai-wei plants are young, and show well the short 
primary branches with their densely congested leaves. The Swatow 
specimen is a fragment of the upper stem, with branches bearing 
the short oval vesicles. Both specimens agree well with tab. 133 
Geogr. Distr. China and Japan. 
8. C. rustrornme Harv. Wei-hai-wei, Boyden! 
Geogr. Distr. pan 
: sigh Dis DICHOTOMA coe Wei-hai-wei, Boyden! without fruit. 
. Distr. pttcritecemai North and South Atlantic, North 
Pacific padi Ocean, New Zealand, Japan 
0. Chordaria firma, n.sp. Fronde coriacea, teretiuscula, 
lateraliter densius ramosa, ramis prolongatis parce ramosis, cm. 
liter compress composito. a a * 
Hab. Wei-hai-wei, Boyden! 
This species is most nearly related to Chordaria fla gellifor mis au 
but differs from it in being less densely branched, in being mor r 
less distinctly tubular in the mature plant, and in poss Zessing % 
broad band of short irregular cells between the long oes cells 
n 
the thallus, appear radially elongated and epi’ than the mea 
cells. In a longitudinal section beea wa n to be short and 
irregular, and they form a distinct bro ee oes closing the long 
internal cells. From this subcortical ayer arises the cortical fringe 
of paraphyses and unilocular sporangia, which are similar to those 
of C esiaeliforieis. The long internal cells of the thallus are all 
of age t ame diameter, ‘and a transverse section shows them 
to be ‘ab more regular than those of C. flagelliformis. The cell- 
walls on thick, and show distinct pits. The axial cavity varies 
slightly in size, but is always small. The whole plant is firm an 
tough, and does not adhere at all to paper when dried. 
. M.Ed. Bornet has been so good as to give me his valuable 
opinion on this plant. 
ee, i bi HESIA pirrormis Aresch. Wei-hai-wei, Boyden 
- Geogr. Distr. North Europe North Atlantic, North Pacific, 
hasta, Cape of Good Hope 
