SPHACELARIEES. — LEMANEES 

 ursum tncrassatîs, submoniliformibus for 



vuiis, s 

 inatuui, 

 CHORDARIA. AG. Thallus ûliformis, solidus, nui— 

 coso-cartilagineus. Stratum medullareex cellulis 

 inanibus, inrequalibus, arcte conjunelis composi- 

 lum; corticale ex floccis simplicissimis, honzonta- 

 libus radiantibus, strictis, sursum incrassalis. 



submonilifonmbus, densissime slipatis formatum 

 CLADOSIPHONja/TZ. Thallus efongatus r cavus, 

 lubricus. Stratum medullare : floccis centrum 

 versus attenuatil, laxissimc implicatis ; subcor- 

 ticale: floccis longitudinalibus majoribus laxe 

 aggregatis ; corticale: floccis tenuissimis, ramo- 

 sis, borizontalibus. 



Tribus XI. SPHACELARIEM. Thallus polysiphonius, parenchymalicus axi destitutus. fhecx 



latérales, solitarise. 



SPHACELARIA. LYNGB. Thallus cartilagineus, 

 articulatus, ramosus, ramis pinnatis, pinnïsdisti- 

 cbis, alternis vel rarius oppositis, articulis dia- 

 metro suba;qualibus. striis binis parallelis longi- 

 tudinalibus nofatîs, ramulorum apicibus inflalis 

 tandem fàtiscentibus. 



MYRIOTRICHIA, //. 1 /; 1'. Tballus membranaccus, 



articulatus, quadrif'ariam ramosus. r.imulis setœ- 

 formibus, articulatis, articulo ultimo in floccum 

 capillare , hyalinimi, dichotomum , elongatum, 

 remote articulatum desinente: 

 CLADOSTEPHUS , AG. Thallus cartilagineus, 

 spurie articulatus, verticillatim ramosus, ramis 

 articulatis, simplicibus vel furcatis. 



Tribus XII. ASPEROCOCCE.E. Thallus cartilagineus, lubulosus. Thecœ in soros aggregàlx. 



- 





151. 152. 153. Asperococcns IhiIIhmi, 



IH i.~>j. Siiermatocbnus Vdrialicus 



156. i 57. 158. Siriai i > altenuala. 



ASPEROCOCCUS, I.AMX. Thallus lubulosus vel 



bullatus, simplei, reticulatim areolatus. Thecœ 

 ' ! " mai ulaeibrmes, pei lotum thallum sparsos 



formantes. 

 striaria GREV. Thallus lubulosus, pinnatim 



ramosus. Theca? soros macuïteformes, m lineas 



transversas dispositos formantes. 

 cuttleria, GREV. Thallus lubulosus vage Ds- 



i.i Sperinatoclmus Adrialicus. 



sus, vel dichotomc ramosus. Thece pedicellate 

 transversim septatx cum floccis articulatis soros 

 parvos formantes. 

 SPERMATOCHNUS KUTZ. Thallus lubulosus, 

 dichotome ramosus, ramis floccorum'penicillo co 



ronatis, Thecae soros verrucœ formes, per loi 



Ilialliim sparsos formantes. 



lubolosus. l'hecx non in soros 



Tkibos XIII. SCYT0S1PH0MEM. Thallus cartilagineus 



colli ctse. 



SCYTOSIPHON AG. Thallus filiformis, lubulo- I dictyosiphon, GREV. Thallus filiforuiis, tu- 

 sus, simplex, tubo intus transversim sept to bulosus, vage ramosissi s. Theca: per lotum 



Theca: lotum thallum vestiente lhallum sparsae 



Tribus XIV. LEMANEA?. Thallus mbcoriaceus , tuba 1 ,' us, Thecas intra tubulum in sortis 



aggregalx. 



LEMANEA, BOUY Thallus lubulosus; ccllula Iate coalitae vesicaeformes, inanes, iensiminfloi 

 corticale i ti njuncta , intermedia ma medull ticulatos ramosos transeunles. 



