ECTOCARPEES. 



Tribus H. ECTOCAlil'E.E. Ftocci arliculati (ex utriculis composai unica série superpositis) 

 varie ramosi, liberi vel in thallum disciformem adpressum coaliti. Thecse ex unico vel 

 extremo ramulorum ramellorumve lateralium articulo. 



ECTOCARPUS.M.M./Î.Floccisparseramnsi.intri- COLEOCHAETE, DBKB. Flocci dichotome ramosi 



eati, liberi. Thecse latérales sessiles vel pedicellati. e centra radiantes, in thallum disciformem ad- 



BULBOCHAETE AG. Flocci dichotome ramosis- pressum sœpius coadunati, e dorso articalorum 



simi, liberi. Thecse ex inferiore ramulorum al- vaginas cylindricas truncatas longe setigeras pas- 



ternanlium articulo vesiculoso inflato, superiore sim prodeuntcs. 



setil'ormi attenuato coronala?. 



Tribus III. DASYCLADE&. Tubus coniimms vel articulâtes, verlicillalim ramosus, ramis 

 fastigiatis, articulatis, articulo extremo in thecam transformait). 



ticulatis , articulis globosis in ramellis ternis 

 quateraisve verticillafis vesiculœformibus. 

 CYMOPOLIA, l.AMX. Tubus articulatus, articulo 

 quoque apice pilis tenuibus, caducis barbato, 

 ramulisque numerosis verticillatis, dichotomis, 

 abbreviatis. ramulis ternis quaternisve verticil- 

 latis vesiculœformibus. 



CHAMJEDORIS. MllXT. Tubus continuus, annu- 

 latim conslrictus , apice penicillatim ramosus, 

 ramis brevibus ramuiosis articulatis. 



DASYCLADUS .4(ï„Tubus continuus, ramos ex- 

 serens horizontales leptotichos, in ramulos ver- 

 ticillatos, articulatos, fastigiatos divisos. 



NEOIHERIS, l.AMX. Tubus continuus, ramis nu- 

 merosis verticillatis. dichotomis, abbreviatis, ar- 



Tribus IV. ACETABULARIE/E. Tubus articulatus, apice radiatim vel flabellatim ramosus 

 ramis continuis, discrelis vel inter se coalilis. Tliecx ignotse. 



POLYPHYSA. l.AMX. Tubus ramis tubulosis, 

 continuis, obovatis, liberis, apice coronatus. 

 CETABULARIA l.AMX. Tubus ramis tubulosis, 

 conlinuis. cylindricis , radiatim expansis aretc 



contiguis in pilei ccnlro umbilicati radiatim 

 striati speciem coalitis apice coronatus. 

 RHIPIDOSIPHON, MIIXT. Tubus ramis tubulo- 

 sis , conlinuis, dichotomis, anastomosant! bus , 

 crusln calcarea cojmexis apice coronatus. 



Tribus V. CAiLEBPEAÏ. Tubus continuus, varie ramosus, ramique conlinui floccis 

 reticulatis inlus farcti. Thecse ignotx. 



CAULERPA. l.AMX. Tubi e surculo horizontale 

 repente, fulcris librosis firmato crecti, multi- 

 forme* et varie ramosi. 



TRICLADIA, VXE. Tubi e surculo cylindrico 

 repente erecti interne annulatim constricti, ra- 

 mis, ternatis, obovatis. 



Tribus VI. SPONGODIEœ. 



Tubuli continui, ramosi, dense 

 The ex latérales. 



vel laxe in thallum constipati. 



f 



[40. I .iutea cyathiformis. 



lit. Halymeda Opuntia. 



\',2. 143 Pi nîcill i c ipitalus 



CODIUM. STACK. Thallus cylindricus e lubnlis 

 continuis, varie ramosis, laxe contextis compo- 

 situs. 



udotea. l.AMX Thallus'flabelliformis planus 

 vel inferne involalus, e tabulis parallelts im- 

 plexis, continue ramosis compositus. z'uii- con- 

 nenti icis obscuris uotatns. 



AVRAINVILLEA, ME. Thallus flabelliformis, 

 planus, e tubulîs ramosis, subcompressis, moni- 



liformibus, intus subslantia viridi-nigra farcit 

 compositus. 



halymeda, l.AMX. Thallus flabelliformis vel 

 dichotome ramosus, e tu bu lis ramosissimis di- 

 chotomis implexis compositus; rami prolifero- 

 articulati, articulis renilbrmibus, transversis. 



PENICILLUS LA 1/A Thallus stipitalus, simplex, 

 rigidus, apice tubulîs dichotomis, rigidis, con- 

 strictis, liberis, Lerminalibus in globum congestis 

 01 natus. 



