— 160 — 



Hab. ： On rocks between tide-marks, often in tide-pools. Kikaiga- 

 shima (C. Wright, Textor), Kiushiu ； Provs. Totomi, Shima, Idzu, Salami, 

 Boshyu, Hoki, Yechi-zen, Yechigo and Noto ； Fusan (Corea). Cysto- 

 carps : ― summar. 



The present planf shows a close relationsnip with Gigartina t7itermedia 

 o\\ the one hand and Gig. Teedii on the other, utgartiua acicularis 

 (Wulf.) Lamour. also has so strong external resemblance with the present 

 plant that it is recorded to have been collected at Yokohama and other 

 localities by several collectors such as Martens, Schottmueller and Kaempfer 

 (De Toni Phyc. Jap— Nov. 1895， p. 24). It is nothing but a slenderer 

 form of the present species, for, as far as I know, ing, acicularis does 

 not ^row in this country. 



PL. XXXIII， Fig. 1-8. Fig. 1-2 ： sterile, broader fronds of Gigartina 

 tcnella Harv. found in tide-pool, \, ― Fig- 3: ordinary, slenderer fronds 

 bearing cystocarps, \, ― rig. 4 : cross-section of frond, -— -. ― Fig. 5: por- 

 tion of the same, ― r ig. 6: portion of longitudinal section of frond, 

 ^^-•i. —一 rig. 7: vertical section of a cystocarp, -^. ― Fig. 8: portion of a 

 nucleolus, 



Gigartina Stackh. 1809. 



すぎの り屬. 

 GIGARTINEAE fGIGARTINACEAE.) 

 すぎの り 亜科 （す ぎ の b 科.） 

 體ハ圓 柱 狀，^ 亂扁壓 又 ハ葉狀 ュ扁ク ，稍 厚ク， 多 少 密-兩 



綠 ヨリ. m -一- X 狀 二分 岐シ， 又 表面 ヨリ 副枝ヲ 生 ス"， 而シ テ同檨 

 ノ形セ ノン 或 ハ槪ネ 短 クナリ タノ レ成實 枝 ヲ兩綠 若クハ 表面 ョ 

 ，-' 發シ， 成 實枝ハ m 條又ハ 分岐 ス， 體ノ構 造 ハ 明 - 絲 組 織 ョ 

 ッ 成 ノレ ： 即 チ， 縱走セ ル 細 キ絲狀 細胞 ァ リ テ其處 此處- 叉 狀- 



