Scr. RnoDOSPERMEiE. l\im. Ceramiacea. 



Plate CCXXVIL 



CALLITHAMNION DISPAR, iiarv. 



Gen. Char. jF;-o??f/ filiform, branched, articulated, monosiphonous, the stem 

 and brandies (in many species) at length thickened internally, or 

 coated externally vvith decurrent filaments ; ramuli always pellucidly 

 articulate and monosiphonous. Fructification : 1, favellfE generally 

 in pairs, axillary or sessile on the branches, naked, containing nume- 

 rous angular spores ; 2, tetraspores naked, sessile or pedicellate, dis- 

 tributed on the ramuli, generally triangularly parted. — Callithamnion 

 [Lyngh.), from koXXc^, beautiful, and dafiviov, a little shrub. 



Froiis filiformis, ramosa, ariiculata, monodphonia, catde ramisque f»ajorihus 

 (in pluribiis) , demnmfibris decurrentibus inttrne vel externe evolutis corticatis 

 V. firmatis ; ramulis semper pellucide articulatis. Fruct. : \, favellis binatce, 

 nxillares v. ad ramos sessiles, nndts, sporas numerosas angidatas foventes ; 3, 

 tetraspora: nuda, ad ramulos sessiles v. pedicellate, iriangide v. cruciatim di- 

 viscB. 



Callithamnion dispar ; frond pellucidly articulate, capillary, more or less 

 pinnate, distichous ; primary branches few, unequal, virgate, bipin- 

 nate ; pinna3 opposite, spreading, unequal, one shortened, the other 

 long and pinnulated ; pinnules opposite or .3-4-stichous, equal, hori- 

 zontal, thick, multifid, mucronate; joints of the branches twice, of 

 the piimse 1 ^ as long as broad, of the pinnules short ; tetraspores 

 sessile on the sides or ends of the pinnules. 



C. dispar; fi'onde pellucide articidata capillar i plus minus pinnatim ramosa dis- 

 ticha ; ramis primariis paucis in(S(pi.alibus virgatis bipinnatis ; pinnis oppo- 

 silis patentibiis iiueqnaUbus una abbreviata altera elongata pinnulata ; jnnnulis 

 oppositis ceqiialibus horizontalibus crassis multifidis mucronatis ; articuUs ra- 

 morum diametro duplo pinnarum sesqui-longioribus, pinnularum diametro 

 (squalibus ; tetrasporis ad latera pinnularum sessilibus. 



Callithamnion dispar, Ilarv. Alg. Anstr. Exsic. n. 509. Harv. in Hook. 

 Ft. Tasm. v. 2. p. 335. 



II AB. Port Fairy, Victoria, IF. 11. H. Warnambool, //. Watts, 112, 127, 



142. East coast of Tasmania, R. Gunn. 

 Geogr. DisTR. South coast of Australia. Tasmania. 



Descr. Root a small disc. Fronds solitary or i&w together, 1-3 inches high, 

 irregularly branched, distichous, pellucidly articulate throughout. Brandies 

 opposite, alternate or secuud, lateral, very unequal in length, long and short 

 intermixed, simple, virgate, erecto-patcnt \ when not o])positc each is op- 

 posed by a small rannilus. The larger branches sometimes bear a sniallcr sc- 



