Scr. RnoDOSPEKMEyE. Yam. Cryptonemxacea. 



Plate CXCIII. 



CALLOPIIYLLIS OBTUSIFOLIA, J. Ag. 



Gen. Char. Frond carnoso-membraimceous^ flat, dichotomous, formed of 

 two strata of cells ; the mechdlary stratum of large, roundish cells, 

 separated by a network of anastomosing cellules ; the cortical of 

 vertical, moniliform filaments. F riictifi cation : 1, half-immersed or 

 superficial, frequently marginal conceptacles, containing within a 

 thick, closed pericarp, a compound nucleus, consisting of several 

 nucleoli or masses of spores; 2, cruciate tetraspores, dispersed 

 through the cortical layer. — Callophyllis {KUtz.), from Ka\o<i, 

 beautiful, and ^vSXov, a leaf. 



Frons carnoso-mem.hranacea, plana, dicJiotoma, stratis duohus contexta ; strata 

 7]iedullari cellulis magnis rotundatis reticulo cellularum anadomomntinm 

 ciiictis, coi'ticali Jilis verticalibus moniliformibus constante. Fruct. : 1, cysto- 

 carpia semi-immersa v. superjicialia, scrpius nmrrjinalia, intra pericarpium 

 crassum claiisuniqiie nucleolos sporarum plures foventia ; 2, tetrasporcE sparsce, 

 cruciatim divisrs. 



Callophyllis oMusifolia ; frond dichotomously multipartite, subfastigiate, 

 flat and entire at the margin ; segments linear-cuneate, with obtuse 

 axils, the terminal tapering into a blunt point ; conceptacles scattered 

 over the surface. 



C. obtusifolia ; fronde dicliotome multipartita snhfastigiata margine plana et 

 integerrima ; segmentis cuneato-linearibus axillis ohtusis, terminalibus versus 

 apicem attenuatis obtusis ; cystocarpiis disco frondis immersis. 



Callophyllis obtusifolia, J. Ag. Sp. Alg. v. \. p. 297. Ilarv. Alg. Austr. 



Exsic. n. 403. 

 Callophyllis australis, /. Ag. Alg. Liebm. p. 13. 

 Hab. Southern Ocean, Liehmann. Philip Island, Western Port, W. H. II., 



rare. 

 Geogr. Distr. South coast of Australia. 



Descr. Boot a sraaU disc. Frond 8-12 inches long, and as much in the expan- 

 sion of the branches, 3-5 lines wide, very much divided dichotomously, the 

 larger segments somewhat fastigiatc. The segments, whether broad or 

 narrow, arc Hnear-cuncate, with rounded and broadish axils; the upi)ermost 

 divisions are gradually narrower, and the tips toper slightly to a bhnit or 

 subacute point. The conceptacles arc plentifully scattered over the disc of 

 the frond, and immersed in its substance, being prominent toward both 

 sides; their nucleus consists of numerous closely packed nucleoli. The 



