s 



Caulerpaceae. 

 Caulerpa Lamour. 

 Gaulerpa tomentella Harv.—J. Ag. Till Alg. Syst. I, p. 8.— De Toni 

 Syllog. Alg. I, p. 445. 



Hitherto known from : Friendly Islands. 



Caulerpa subserrata Okam. mscr. 



Q. subsenata — Frond erect rising from a repenting surculus, shortly stipitate, often gemi- 

 nate, truncato-obtuse at apex, oval at base, flat, serrato-pinnatilobed, with lobes suhalternate, 

 approximated, very short, deltoideo-linear, a little curved, obtuse, subaeqnal to half the 

 breadth of the rachis. 



Frond is erect, rising from repenting, glabrous, cylindrical, branch- 

 ing surculus aud often two stand near together. It is linear or elliptico- 

 oblong in outline, flat, truncato-obtuse at apex, oval or obtuse at base, 

 tapering to a very short cylindrical stipe and has a length of 1-2.5 cm 

 by the breadth of 3-4 mm. It is either simple or branches by prolifera- 

 tions and is serrato-pinnatilobed along both margins. Lobes are sub- 

 alternate, very much approximated, short, patent and a little curved 

 upward. They are deltoideo-linear and younger ones apiculate from 

 broader base, but becoming obtuse afterward. They attain a length 

 almost aequal to half the breadth of the rachis. 



The present plant may be regarded as forming a connecting link 

 between the section Phtjllanthoideae and Filicoideae, on account of short 

 serrature-like margin of broader oblong rachis. It may be referred to 

 the latter section and be placed in a vicinity of G. scalpelliformis Ag. 

 G. scalpelliformis and G. crassifolia which have some resemblance to ours, 

 differ by having lobes longer than the breadth of the rachis and G. 

 denticnlata, by having lobes denticulated along the external side of 

 ramenta. G. biserrulata, which appears from the description given in 

 J. Agardh Till Alg. Syst. I, p. 11 to have fronds similar to the present, 

 differs, however, in having bifido-dentate serratures along the margin 

 of the rachis. 



Gaulerpa chemnilzia (Esp.) Lamour. — De Toni Syll. Alg. 1, p. 477. 

 —J. Ag. Till Alg. Syst. I, p. 36.— Fucus Chemnitzia Turn. Fuci. t. 200. 



Hitherto known from: The Indian Ocean at Ceylon, East 

 Molucca and the Keel Sea. 



