一 243 ― 



Calosiphonia vermicularis (J. Ag.) ^^chm. 



, Norn, Jap.; Numeri-gusa. 



PL. XLIX. Fig. 9-23， 



Calosiphonia vernv^alaris (J. Ag.) Schm. Syst, Uebers* Florid, 

 (in Flora 1889) p. 453 ； Bom. Alg. de Schousboe p. 342 ； de Toni 

 Syll. Alg. IV, p. 1643. 一 Nemastoma vermicularis J. Ag^. Sp. Alg. U， 

 p. 163. — Lygistes vermicularis J. Ag. Epicr. p. 1 19 ； Id. rlorid. 

 Morphol. t. 4, f. 6-10 ； Ardiss. Phyc. Med. I, p. 134. — Calosiphonia 

 Finisterrae Crouan Fl. Finist. p. 141, t. 13 ； J. Ag, Epicr. p. 1 18. 



Frond is very soft, o-elatinous and iubricoiis, almost cylindrical, 

 or somewhat compressed, slig'htly narrowed at base and tapennp^ 

 toward apices, irrep'ularly decompound-pinnate with branches on all 

 sides. Branches very much densely loaded with similarly shaped 

 branchlets. Plants are so much soft and p-elatinous [hat when it 

 is spread out on paper branches run to^rether confluently. 



Plant has a central axis which tern^inates in a distinct apical 

 cell separated from the next standin<j one by a horizontal partition. 

 Peripheral filaments verticillately arisino- from every articulation of 

 the central axis many times branch in iastip-iato-dichotomous manner 

 and the upper articulations forming subnionililorm filaments coalesce 

 to form the cortical layer. The hollow space of tubular frond is 

 soon afterward filled up with rhizoid filaments wnich orginate from 

 lower articulations of peripheral filaments. . 



Antheridia form wart-like patches on or near the apical portion 

 of branches and branchlets in the same frond as that bearing 

 cystocarps ； i.e. the plant is monaecious. Antherozoids are produced 

 from the uppermost cells of peripheral filaments of the portion 



