― 180 ― 



forms, as it is snown in し ramers I.e. faf. I, fig. 8 nnd 9, I came to' 

 conclude that our plant is not so much different from the typical species; 

 that it should be taken for a variety. 



PL. XXXVI. Fii. 1: fronds of Caioglossa L ゆ riew'ii growing on 

 plank in nat. state and size, ― Fig. 2 : surface-view of the half of frond, 



― Fig. 3: growin<^ portion of frond, -一 Fig. 4: young prolifera- 

 tions, -や. ― Fig. 5: frond having more regular arrangements of segments, 

 f . — t ig. 6: frona having subaltcrnate segments bearing tetrasporic sori, 

 一]— 2 . —— Fig. 7 : fertile segment with a tetrasporic sorus, t ； the lower cells 

 already emptied, —なな. 一 Fi^. 8: cross-section of a sorus, -^. ― Fi^. 9: 

 portion of the same, ― Fig. 10: surface-view of a portion of sorus on 

 the right side of the midrib, showing tetrasporangia and cortical cells, 

 i ま— 0. —— Fig. 11 : under-surface of frond, showing cystocarps and be^^inning. 

 of roots, r, Fig. 12: longitudinal section of a cystocarp, If o. ― Fig. 



13: terminal portions of frond bending toward the undersurface ； r, roots, 



. ― Fig. \a. : portion of frond taken from an American specimen, slightly 

 magd. ― Fig. 15: growing apices of the same, 



PL. XXXVII， Fig. 12-13. Fig. 12 : cystocarp and root fibres, r， -— 

 Fig. 13: suriace-vievv ot cystocarp, -^. 



Caioglossa (Harvey 1852) J. Agardh 1876. 



あやぎぬ 屬. ： 

 SARCOMENIAE (DELESSERIACEAE). 

 サ ノレ コメ ユア 亞科 （このはの り 科). 



體ハ お葉 狀， 屢々 叉狀ニ 分岐 シ， 分岐 點ュ於 テク ビ レ タ 

 ノレ 如 クナリ テ關 節シ， 此所 ヨリ 往々 其 裏面 ュ副 枝ヲ發 出ス； 成, 

 艮點ハ 橫 - 關節セ ノレ 大ナ ノレ 頂 細胞 ヲ ズ シ， 體ハ一 層ノ 細胞 ョ 

 リ成リ テ薄ク ，中 助ヲ 存ス； 中 肋ハ之 ヲ上ョ リ見 ノレ 時 ハ三條 Z 



