024 Sra/EROCoccoiDE.t. Eucheiima. 



Ilabitu cum Hli. palmala maxime convenire milii viJetur, set! multo 

 crassior et magis cartilasinea. Hookcrus et Harv. illam cum Gracilaria po- 

 lycarpa et Callophylli ornata comparand 



CII. EUCHEUMA J. A(j. Altj. Ltebm. p. 16 (excl. sp.) Sphaero- 



cocctis sp. Ag. Spbrcrococci et Gigartinae sp. Kiitz. 

 Frons earnoso-cartilaginea subcornea immerse costala, demum plus 

 minus papillosa, triplici strato constituta: medullari fills elon- 

 gatis articulalis et anastomosantibus, densius stipalis et inter 

 cellulas rotimdutas strati intermedii excurrentibus; peripliericis 

 oellulis minutis in lila verlicalia moniliformia conjtinclis. Cy- 

 stocarpia in papillis evoluta .... Sphcerospora in strato cor- 

 ticali inimersa?, sparsa? zonatim clivisa?. 



Frondes lilifonncs aut jilanaa, rccentes sine dubio carnosa 3 , 

 purpurascentes aut carnea?, oxsiccatw eximie cartila^inea? durissimop, 

 varie in diversis ramosa> ; mine siibdicliotoma?, mine pinnatim ramosse 

 ramis oppositis verticillatis aut altcrnis, disticliis aut quoquoversum 

 egredienlibns, nud;c aut sicpissime spinis papillisve oppositis aut 

 verticillatis aut undique pullulanlibtis obsita 1 ct horrid;c. 



Triplici strato constituuntur. Ccntrale, costam immersam effi- 

 ciens cellulis lilirormibus lomjissimis articulalis, bine anguslis illinc 

 latioribus, sine ordine intcrtextis (tubo centrali nullo) constat. Ob- 

 liiiue IUTC fila excurrunt, inter cellulas rotundatas strati intermedii, 

 diametro vix duplo longioros, crassissimis parietibtis instructas, in- 

 tercellularia anastomosantia et dcmuui cum peripberico strato juncta. 

 Peripbericum stratum cellulis minutis rolundalis, in lila moniliformia 

 seriatis, eflicitur. Stratum intermedium ct centrale sunt longitudi- 

 nalia, periplicricum versus ilia verticale. Frons a superficie con- 

 specta ipiasi punctata. 



Cystocarpia vix cognita; capsuku Fucb. spinosi see. Turnerum 

 in papillis evolula: iisijue immersa-, congeriem gcmmidiorum nullius 

 certie liguraj conlinentes. Spba3rospora3 in ipsa fronde evoluta-, 

 strato peripberico immersu!, olongata?, oblonga), /onatim quadripar- 

 tite 1 ; lias in plurimis generis spcciebus bodie obscrvavi. Stratum 

 fructiferum amplius (|iiam in sterili, cellulis intcrioribus anastomo- 

 santibus, extcrioribus radialis. 



Species, qua' boc genus dliciunt, pa rum cognilw videntur. 

 Ina jam a Linna-o descripta et a Turncro eximie illustrala, vix 

 aulein rccentiori x\o reperta, altcra ab Kspero depicta, reliqua 1 a 



