Ser. Chlorosperme^. Fam. SiphonacecB. 



Plate XCV. 



CAULERPA HARVEYI, F. Mudi. 



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-membranaceous, destitute of cal- 

 careous matter. Structure unicellular, the cell (frond) continuous, 

 strengthened internally by a spongy network of anastomosing fila- 

 ments, and filled with a semifluid grumous matter. Fructification 

 unknown. — Caulerpa {Lamx.), from Kavko<i, a stem, and kpirto, to 

 creep : creeping surculi are characteristic of this genus. 



Frons ex surculis prostratis Jdc illic radicantibus et ramis erectis polymorpMs 

 constituta. Substantia corneo-membranacea. Striictiira unicellulosa, cellu- 

 les membrana continua liyalina intus filis cartilagineis tenuissimis anastomo- 

 santibus firmata et endochroinate detiso viridi repleta. Fruct. ignota. 



Caulerpa Harvei/i; surculus robust, glabrous and glossy; fronds with 

 long, glabrous stipites, subsimple or alternately branched ; the rachis 

 and branches thickly whorled with five-ranked, setaceous, subacute, 

 straight or incurved, elongate ramenta. 



C. Harveyi ; surculo crasso glabra nitente ; fronde longe stipitata subsimplici v. 

 alterne vage ramosa ; racliide ramisque densissime ramentls setaceis elongatis 

 simplicibus strictis incur visque pentasticJds (raro tetrastichis) onustis. 



Caulerpa HarVeyi, F. Muell. in Herb. Vict. Harv. Alg. Exsic. Austr. n. 

 554. 



Caulerpa filifolia, Harv. (olim) in Herb. 



Caulerpa Brownii, 8ond. Linn. v. 25. p. 660 fnon Hook, et Harv. Fl. N. 

 Zeal. p. 260. t. CXXI. A). 



Var. yS. crispata ; of smaller size, and usually pale yeUow-green colour ; ra- 

 menta strongly incurved and frequently curled, less obviously five-ranked. 



Var. j8. crispata; minor, luteo-virescens ; ramentis incurvis crispatisve, saepe 

 vix et ne vix pentastichis. 



Hab. Guichen and Rivoli Bays, 3r. Mueller. Port Pairy, and at the 

 Heads of Port Phillip, W. H. H. Var. yS. In rockpools between tide- 

 marks. Port Phillip Heads, and Western Port. 



Geogr. Distr. South coast of Australia. 



Descr. Surculus several inches long, 1-2 lines in diameter, branched, quite gla- 

 brous and glossy, with stout and strong rooting processes. Stipes 2-3 

 inches high, glabrous and glossy, then passing into the leafy portion of 

 the stem. Stem 1-2 feet long, simple, or furnished with few or several, 



