- 153 - 



PL. CLXXXVII, Fig. 1-13. Fig. 1: terminal portion of a sterile 

 branch showing the arrangement of ramuli and ramelli, ' ' . Fig. 2: 

 growing apex of frond, ^p. Fig. 3 : apical portion of a ramulus 

 situated near the apex of an axis, showing ,, Haarblattern," //, and 

 apical cell, </, ^~. Fig. 4: cross-section of frond ; c, central cell. -"<J. 

 Fig. 5: longitudinal section of frond; c, c.-ntra! cell, ; ^-. Fig. 6: 

 terminal portion of branch bearing antheridia, -' r ' Fig- 7: antheridia- 

 --. Fig. 8 : tetrasporic ramuli on stunted branchlets, slightly magd. 

 Fig. 9: tetrasporic ramuli on normal (not stunted) branch, -^-. Fig. 

 10: tetraspores viewed from the side of a stichidium, -3-. Fig. 11: 

 tetraspore, showing cover-cells, -^p. Fig. 12: branch bearing cystocarps* 

 J^-. Fig. 13: cystocarp, slightly maged. (Fig. 1, 3, 4-5. 11-12 drawn 

 from alcoholic specimens from Onahama). 



Nemalion multifldum (W. et. M.) J. Ag. 



Noni, Jap. : Tsitkitnio-nori. 

 PL. CLXXXVII, fig. 14-16. 



Nemalion muUifidtim (W. et M.t J. Ag. Sp. Alg. II, p, 419; Id. 

 Epicr. p. 508 ; Id. Florid. Morph. t. 29, f. 1 ; Harv. Phyc. Brit. t. 

 36; Kiitz. Tab. Phyc. XVI, Tab. 61; Farlow Mar. Alg. New England 

 p. 117, t. 12, f. 1; De Ton! Syll. A!g. IV, p. 78. 



I'ronds filiform, weak, few from a small disc, worm-like, about 10 

 cm. high, 1 mm. thick, gradually tapering above, many times irregularly 

 and somewhat divaricately dichotomous with round and broadly obtuse 

 axils. Peripheral filaments moniliform with the lower articulations little 

 longer than thick, gradually becoming larger and globular above, attain- 

 ing ca. 120, in thickness in the uppermost joint. Colour dark brownish 



