Ser. Chlorosperme^. Fam. SipJionacea:. 



Plate CVII. 



CAULERPA REMOTIFOLIA, Sond. 



Gen. Char. Frond consisting of prostrate surculi, rooting from their 

 lower surface, and throwing up erect branches (or secondary fronds) 

 of various shapes. Substance horny-membranous, destitute of cal- 

 careous matter. Structure unicellular, the cell continuous, strength- 

 ened internally by a spongy network of anastomosing filaments, and 

 filled with semifluid, grumous matter. Fructification unknown. — 

 Catjlerpa [Lamx.), from KavXo<}, a stem, and epirco, to creep. 



Frons ex surcuUs prostratis Jdc illic radicantihus et ramis erectis polymorphis 

 formata. Substantia corneo-memhranacea. Structura vnicellulosa, cellulce 

 membrana contimia hyalina inim fills cartilagineis temiissimis anastomosanti- 

 busfirmata et endochromate denso viridi repleta. Fr. ignota. 



Caulerpa remotifolia ; surculus very long and slender, glabrous ; fronds 

 erect, simple, linear, two-edged, pectinato-piunate ; pinnse distant, 

 alternate, subulate, acute. 

 C. remotifolia; surculo longissimo tenui glabra ; frondibus erectis simplicibus 

 linearibus ancipitibus pectinato-pinnatis ; pinnis remotis alternis subulatis 

 acutis. 

 Caulerpa remotifoha, Sond. in Linn. v. 25. p. 660. 



Hab. Lefebre's Peninsula, Dr. Ferdinand Mueller, 1852. 



Geogr. Distr. South Austraha. 



Descr. Surculus several inches in length, as thick or twice as thick as hog's- 

 bristle, quite glabrous, glossy, rooting at intervals of an inch or more ; the 

 roots small. Fronds 3-6 inches long, i hne to 1 line in breadth, com- 

 pressed, two-edged, quite simple or occasionally bihd, naked for an inch 

 above the base, thence to the apex pectinated with distichous, alternate, 

 subulate pinnse, 1-li lines long, ^ line wide, 1-2 or 4-8 lines apart, erecto- 

 patent. Colour a full green, becoming ohvaceous in drymg. Substance 

 horny. In drying it very imperfectly adheres to paper. 



This slender species is considered by Sonder to be allied to 

 C. plumaris and C. tascifolia, from which it is at once known 

 by its very distant, scattered, and somewhat differently shaped 

 ramenta. To me its nearest affinity appears to be with C. seal- 



