Croiiania. Cl'ramie;e. 105 



lonoantiir arliculi a\is, distantos, frondnm nodosam roddcntos. Fila 

 vorticilloiinn nionilironnitor articnlata, ad arlinihim qiiomqiic divisa, 

 jiixfa hascni pinnata, siipcrno diciiotoma, fastijjiata. iMUCtus iitri- 

 nsqiie {jcneris ad hasem vorlicillornm siti. Hami favcllas fjerontcs 

 infra ai)icem attenuatum incrassati, favcllas sinjjulas aut {jcminas 

 adproximalas intra ramcllos verticillatos undiqiie amljienlcs [jeren- 

 tcs. Favelljc intra mcmhianam gclalinosam Iiyalinam gcmmidia ro- 

 tundata laxiora, nullo ordino ut videtiir disposila, fovontcs. SpliJE- 

 losporoe pro majjniludine ipsiiis plantae magiK-ie, ad articulos intimos 

 lilorum verticillaforiim affixoe, ramisqne amhicntibiis liorum subin- 

 clusa^, intra pcrisporium laxius triangule qiiadridivisse, aut transvcr- 

 sali divisione bipartita\ 



Si ipse tubus axis dissecatur, membrana illius crassa et qiiasi 

 duplex, intcrstitio celluloso, adparct. Milii autem essiccatam ob- 

 scrvanti, haec structiira non ita pcrspicua adparuit, ut de observatione 

 certus sim. 



Geniis quoad plnrimos characteros ad Callitliamnia vcrticiliafa 

 valde acccdens, ramcllis verticillatis densioribiis, in planta juvenili 

 fcre stratum periphcricnm continuum formanfibus, (in senili obso- 

 letis, axcm nodosiim nndum linqiicnfibus), pra}cipue distinctum. Ab 

 hoc vero charactcro pcndent alii: frons eximie {jelatinosa et fructus 

 inclnsi. Ab altera parte Dndresnayam tangit, quno vero sphterosporis, 

 aliis characteiibus posthabitis, facillimc distingnifur. 



Genus a D:na Giirfilhs primum indicatiim, in Alsjis Med. a me 

 institiitum, pliirimi hodierni alfjologi adopfarunt, excepto tantiim 

 Kiifzingio, qui planfam typicam Callilharanio adnumcrat. 



I. Cu. ATTENU.\TA (Bofitiein. msci\) frondc sursum attonuata, sphaj- 

 1'osporis spIuTericis triangule divisis, in ramo vcrticilloruin sin- 

 Gulis. 



Batrachospormum attenuatum Bonncm. in Ilerb. Ag! 

 Cr, altenuata J. Ay. Alg. med. p. 83. Haio. Phyc. Bril. lab. lOG! 

 Crouan. in Ann. Sc. Aat. -1848. iO p. 37.3. Pl. 12 /?y. 24 -2oI 

 Mesogloia attcniiata Ag. Sgsl. p. 51 ! 

 Mesogloia? moniliformis Griff. in Ilarv. man. p. 49. 

 GrifTithsia nodulosa Ag. Sp. II. p. 130! 

 Callithamnion nodulosum Kiilz. Plnjc. p. 373. Sp. p. Gol! 



llab. in mari adriafico et mcdifcrraneo, aliis aljjis parasilica; 

 in Occano atlanfico ad litfora Galli;e (lionncmaison ! Crouan!) et 

 An[jliw inferiora (D;na Wyatt!}. 



