— 237 — 



c. Ctenodontece Montagne: ihallus coccineus, ex- 

 pallens, filari-conipressus, 2-^-pinnatisectus, axi filis curvalis, 

 in cortice dichotomis et parenchymate subcorticali circum- 

 dato, synangia <•. tetroidiis discoschizis et paranematibus V. 

 cistulas (anlheridia?) inter pinnulas gerens: — Ctenodus. 



d. G el idie ce nob.: tlialius microcytus, compresso-line- 

 aris, pinnato-ramosus v. laminaris, endothallio filari amplo, 

 mesolh. parenchymatico, epilh. perenchymatico. Ooclonia ca- 

 vernulas immersas v. lelroidia stauroschiza foventia. Lenor- 

 niandice cistulae majores aggregalae, subapicales, nemathecio 

 et placenta centrah plenae!; Chcetangio syuangia creberrima: 

 — Gelidittm, Suhria; Lenormandia^ Melanl halia ; CJicetan- 

 gium^ Sarcophjcus? 



<•. Gigartinece: thallus laminaris v. filaris, dichoto- 

 mus et decomposito-pinnatus, fusco-purpurascens <, epithal- 

 hi catenulae dicliotomDe, horizontales, endothalUum reticula- 

 tum perenchymalicum v. hehninthocytum et mesothalHo 

 par-epenehymatico. Cavcrnulce immersae per omnem ihallum 

 V. exsertae ad marginem v. segmenta thalli. Tetroidia varia, 

 sparsa, sorosa, v. in oocloniis et nemalheciis: — Iridcea^ Gra- 

 tcloupia, Chondrus^^Mastocctrpus^ Chondracanthus^ Kalljme- 

 nia, Constantinea^ SarcophyVis^ Solicria^ Gigartina. 



f. S phcero co cc ece noh.: ihallus filaris compressus, ra- 

 moso-pinnatus v. laminaris, passim costatus, carneo-roseo-atro- 

 viridi-purpureus, sicc. alterabihs: parenchyma celluhs excen- 

 trice minoribus et perenchyma externum, rarius catenulatum. 

 Cistulae hemisphaericae v. globosse in pinnulis, ovula clavata et 

 placenta cellulosa. Tetroidia disco-v. stauroschiza, rarius ne- 

 mathecia: — Delisea, Hj/mcea^ Cjstoclojiium, J\hynchococcus, 

 Callihlepharis; Heringia? Sphcerococcus (Gracilaria et Rodhj- 

 meniaj^ jicropeltis, Tremotococcus ? 



g. Tylocarpece nob.: thallus filaris v. laminaris, di- 

 chotomus, quibusdam costatus et prolifer: parenchyma cellu- 

 lis excentrice minoribus et perenchyma externum radians; 



