— 98 — 



"branches and are lanceolate in outline. In the cross-section, 6 tetra- 

 sporangia are seen in one and the same plane, which are externally 

 protected by a few smaller cortical cells. Cy shear ps and anther idia 

 are unknown to me at present. Colour vinoso-brown with greenish tint. 

 Plants do not adhere to paper in drying. 



Hab.: On rocks 5-6 ft. above the surface of sea, where spray 

 jiiay come upon and stretched along the fissures of the rock, through 

 which the subterranean water oozes out ； Cape Bo (Prov. Satsuma), 

 Riukiu. 



PL. XXII， Figs. 1-13. Fig. 1： Dostrychia tenella (Vahl) J. Ag. 

 in nat. size. ― Fip-. 2 : portion of frond bearing stichidia, 《-. 一 Fig. 3 : 

 portion of branch with root-like attachments, ― np-. 4：-5 : portion 

 of branches of the lesser sort, さ， resj^ectively. — no-- 6 ； short 

 and more or less dennite branch, seen from the under- surface, show- 

 Jnor the dorso-ventral arran ゾ ement of branches, — npr. 7 ： cross- 

 section of branch, slightly mac^d. ― Fip^. 8 : portion of the cross-section 

 with pericentral cells ； c, central axis, — Fig. 9 ： portion of lonp-i- 

 tudinal section with the axis, a, ^ j^. — np-. 10-11 : stichidia, magd. —— 

 np". 12 : portion of a stichidium with a tetrasporangium seen from 

 the surface, ―. ― Fig. 13 ： cross-section of a stichidium, 



Bostrychia Montagne. 



こけ もどき m' 



RHODOMELACEAE. ふ ち、 まつ も 科. 



體ハ年 臥シ， 多ク ハ^ 匐 シ， 稀 - 斜 上 シ或ハ ili 立ス， 多 少 ^ 

 睡 （時 ニ甚 不明 ナノ レコ ト ァ リ） ュシテ .HI 背ノ 性質 ヲ存シ ，左右 兩 



緣ョ リ互 生シ， 羽狀 二分 技シ， 稀 ュ叉狀 、稍 叉狀' ュ分 枝ス， 細胞 



