- 156 



p. 177, t. 21, f. 2-7; De Toni Syll. Alg. IV, p. 964. Bostrychia? 

 crassiila Heydr. Algenf. v. Kais. Wilh. Land, p. 480, t. 26, f. 18-19. 

 Polysiph.f influtii Mart., Preus. Exped. n. Ost Asien p. 31, t. 7, f. 2. 

 PolysiDh. Calodictyo-i Harv., Kiitz. Tab. Phyc. XIV, t. 46, f. a-c.- 

 Poly>ipli. calacctntha Harv. Char. New Alg. p. 330. 



Fronds entangled among oth^r algae, erect, fine, filiform, laterally 

 branched. " Langtriebe " surrounded throught the whole length with 

 spirally arranged, J-alternatly branched " Kurztriebe " or lateral 

 branches which have the appearance of short stipitated star-shaped 

 glomerules. Branches widely parted or almost horizontal. Star-shaped 

 glomerules consist of short, thick, conical, divaricately branched 

 polysiphonous horns which are further brandling. Sometimes elongated, 

 single-celled, hair-like root-fibres are emitted from the middle of the 

 cluster of star-shaped horns, which attach the plant to other bodies 

 occasionally forming disc-shaped expanded holdfast at the apex. Articula- 

 tions subequal to the diameter or a little shorter. Filaments cylindrical 

 or more or less quadratic in cross-section. Colour dark brownish red. 

 Substance soft membranous and the plant does not firmly adhere to 

 paper in drying. 



Huh. : entangled on algae. Ryukyu, Ogasawarajima, Boshyu. 



PL. CLXXXVIII, fig. 5-10. Fig. 5: frond of Roschera glomerulafa 

 (C. Ag.) Weber v. Bosse, f Fig. 6 : branch, ^/-. Fig. 7 : portion of 

 branch magJ., showing ^-alternate arrangement of " Kurztriebe," 1 3 -. 

 Fig. 8: portion of branch bearing root-fibres, -^-. Fig. 9: growing 

 apex of frond, 3 J- ? . Fig. 10: cross-section of frond, -i2-. 



