178 T. H. BUFFHAM ON BONNEMAISONIA HAMIFEBA. 



nation nntil this year, when I became very doubtful that the 

 cireumstances just referred to eonld account for the raminca- 

 tion and dense cortex. At this juncture I sent a portion of a 

 plant to Dr. Ed. Borne*, of Paris, who was kind enough to 

 lend me a small piece of S. hamifera Hariot from Japan winch 

 he considered my plant much approached by its ramifica ion 

 its mucronate ramuli, and its cortex. Later on he a so lent me 

 a dried specimen (see Fig. 1) on which are pWyseen the 

 peculiar branches ending in a hook (h) winch led M. Hariot to 

 adopt the specific name. This induced mc to search my 

 specimens for similar branches. I found one almost exactly 

 like the one shown in Fig. 2, but with the actual pomt broken 

 off exposing the cells of the interior. All three specimens 

 showed them, but of reduced size ; evidently all my plants are 

 younger than the Japanese specimen. Fig. 3 represents my 

 dried plant, the smallest of the three, but a hamose branch can 

 be detected a short distance from the bottom of the figure 

 (indicated by h). Meantime I had detected on the perfectly 

 developed ramuli near the growing summits of the branchlets 

 of my plants some minute hyaline recurved spines-2-5 on a 

 ramulus-and always secund near the pointed apices. These 

 project only about 10 ^ from theramulus, and are consequently 

 visible only when presented in profile (Fig. 5). I then found 

 similar spines on the small portion originally received from Dr. 

 Bornet. The Japanese plant has procarps and perfect cysto- 

 carps with carpospores, but no antheridia. These various 

 features, notwithstanding that the Falmouth plants have not 

 been fecundated, establish the specific identity of the Cornish 

 plants with those of Japan. 



' I have been led into the foregoing rather prolix statement on 

 account of the peculiar circumstances of the case. 



B. hamifera was first published by Hariot in 1891.* A few 

 specimens were found in a collection of algse made by Dr. 

 Savatier at Yokoska in Japan. The diagnosis given by M. 

 Hariot is very clear, and he adds some remarks upon the 

 differences between it and B. asparagoides. He gives no figures, 

 however, and I may be permitted to enlarge the original 

 description. 



» " Mem. de la Soc. dos Soi. Nat. et Mathematiques de Cherbourg," T. 

 xxvii., p. 223. 



