— 56 — 



パ-、 Fronds, few arising- from buffy-coloured stupose conical disc, thick, 

 coriaceous, compressed, traversed by the immersed midrib, densely 

 branched by repeated proliferations from both sides of the midrib on 

 both surfaces, 15-^0 cm. high. Lower portion of the older frond 

 becomes stipitate by the denudation of the most part of wings. 

 Proliferated segments elonp-ated, 10-20 cm. long, 1-5 mm. broad, 

 linear or linear-oblanceolate, beinp- attenuated at the base with rounded 

 apices and sometimes forked. Marp^ins usually entire, but sometimes 

 provided with few and fine teeth. Oospores densely collected in inter- 

 rupted linear sori alon;/ both sides ot the midrib. Colour olive brown 

 when fresh, turning to dark bluish in exposure to the air, and becoming* 

 darker in drying-. Plant does not adhere to paper in dryinp\ 



Hab. ： On rocks between tide-marks. Provs, Tosa, Totomi, 

 Boshyu, Idzumo, Uzen. Fruits : ― August. 



In the system the present plant stands near H, ligulata Suhr 

 with which it resembles in the way of ramification, but differing in the 

 arrangement ot sori. The close affinity of the present plant with it. 

 latiuscida Okam. sp. nov. will be spoken under that species. 



PL. XII. Fig. 1 : fully PTOwn naliscris prolifera in nat. state 

 and size. — Fig^. 2 : branch bearinp" sori, \ . — Fig". 3 : portion of branch 

 bearincy sori of oospores, slightly magd. ― Fig. 4： : sorus of oospores, 

 ザ. 一 rig. 5 : cross-section of a segment, ―^. ― ng. 6 : oospores, 



Haliseris prolifera Okam. 

 -. へら ゃはづ 岡 村 稱. 



' ：' 第 xii 圖版， 



體 ハ ^^ま 色 ノ 毛 葺 ヲ 以 テ 蔽 ハ レタ ノレ 圓錐 狀根ョ タ 叢生' ン, ：7 



