Ser. EiiODOSPEUME.E. Fam. Corallinacea. 



Plate CCXXX. 

 AMPHirvOA STELLIGERA, Lamarck. 



Gen. Char. Frond terete, compresssed, or flat, calcareous, articulated, di- 

 cliotomous, pinnated or wliorled. Nodes cartilaginous. FnicL : 1, 

 conceptacles conical, wart-like, sessile on the disc of the articulations, 

 furnished with an apical pore, and containing in the base of the 

 cavity a tuft of erect, pyriform, at length four-parted spore-threads. — 

 Amphiroa \Lamour.), a fanciful mythological name. 



Frons calcarea, fragilis, teres v. compressa v. plana, articidata, dichotoma v. 

 pinnatim rarnosa v. verticdlata. Genicula cartUaglnea. Fr. : 1, conceptacida 

 conica, verriiC(rformia, ad superjiciem articidorum sessdia, apice poro pertusa, 

 in f undo loculifila sporifera fasciculata erecta demum qnadripartita,foventia. 



Amphiroa steUigera ; frond elongate, terete, slender, the primary di-tri- 

 chotomous, decompound, much branched, the smaller branches and 

 ramuli whorled ; joints cylindrical, equal, or those of the main 

 branches thickened at each end, the lower ones very short, the upper 

 6-8 times as long as broad ; nodes naked, filiform, the lower and 

 medial ones elongate, the uppermost as long as broad ; ceramidia 

 secnnd on the ramuli. 

 A. steUigera ; fronde elongata tereti tenui, pr'imaria di-trlcliotoma decomposito- 

 ramosissima, raniis minoribus ramulisque veriicUlatis ; articidis cylindraceis 

 (equalibusvelmediis basi et apice incrassatis, inferioribus brevissimis, supremis 

 diametro Q-8-plo longioribus ; genicuUs nudisjiliformibus, inferioribus mediis- 

 que longissimis, supremis diametrum longiiudine aquantibus ; ceramidiis ad 

 ramulos secimdis. 

 Amphiuoa steUigera, Lamarck, Mem. Mus. v. 2./?. 239. Dene. Cor. p. 112. 

 Harv. Ner. Austr. 96. Aresch. in J. Ag. Sp. Alg. v. 2. p. 540. Ilarv. in 

 Hook. Fl. Tasm. v. 2. p. 310. Harv. Alg. Exsic. Austr. n. 461. Kiltz. Sp. 

 Alg. 701. 



Amphiroa interrupta, Lamonr. Pol. Flex. p. 300. t. 11./. 5 A. 



Ampuiroa jubata, Lamonr. I. c. p. 304. t. 11./. 6. Aresch. Fhyc. Extraeur. 

 Exsic. w. 24. 



Amphiroa elegans, Sand. PI. Preiss. v. 3. p. 187. 



CoRALLiNA steUigera, Lamarck, I. c. 

 Hab. On the stems of Cymodocea antarctica, common. 

 Geogr. Distr. Western, southern, and eastern shores of Australia. Tasmania. 

 Descr. Fronds densely tufted, many-stemmed, 3-6 inches or more in length. 



