— 23^ — 



caduca; antheridia? — Algse marinae, exclusa Lemanea — a- 

 griohydrica. 



a. Lemaneece: filares, globosje v. laminares; parane- 

 mata et oviila thallo v. goniangio inclusa: — Lichina; Tham- 

 nocoelium^ Lemanea» 



b. Sp or o c h ne ce: ihallus filaris ramosus kionophorus 

 V. laminaris; paraneniata goniophora v. steriha (caduca) ex- 

 terna, terminaha e capitulis ramulorum v. lateraha: — Ar- 

 throcladia^ Sporochnus, Carporrdtra , Desmarestia fDesmiaJ, 



F A M. 18. L A M I N A R I N iE. 



Algae maria frigidiora praedihgentes, pussim gigantese. 

 Thalhis ohvaceus, radicosus, laminaris, slipitalus v. fohosus, 

 passim ampulhfer v. cribrosus^ endothaUio plerumque fdari, 

 mesothaUio parenchymatico et lacunoso <, epilhalho peren- 



chymatico. Ovula h perfecta^ aggregala, externa; parane- 



mata simpl. v. antheridiomorpha , interna v. externa: — 

 Phloeorhiza, Capea^ Laminaria., Jiafgygia, Phycocastanum^ 

 Alaria, LcMonia, Costaria^ A^arum, Thalassiophyllum^ Les- 

 sonia^ Macrocjstis, Nereocystis. 



F A M. 19. F U C I X iE. 



Algae marinae cosmopohtae, ohvaceae v. fuscescentes, sic- 

 catae nigrescentes v. fusco-rubenles. Thahus coriaceus, basi 

 scutulata, dichotomus, laminaris v. caulesccns, ramosus, pas- 

 sim foliosus, ampuUifer, cryptophorus v. gemmascens; ceUu- 

 lae epilhallii minimae horizontales, mesothaUii majores, glo- 

 bosae v. oblongae, endothaUium fibrosum <, in synangiis et 

 ampuUis rarefactum. Goniangia (cryplae goniophorae, sori in- 

 trusi ostiolati) per omnem thaUum dispersa, ad ramulos so- 



htaria v. in synangiis -\ distinclis aggregata, bi-unisexu- 



aha, mon-dioeca, paranematibus simphcib. v. ramosis, ovula 

 fusca integra v. 2-8-parlibiha stipantibus, v, anlheridia (ve- 

 siculae spermozoophorae lutescentes) fulcrantibus, plena. 



a. Fucece: aphyUae; goniaugia per omn. thaUum sparsa 

 V. in synaugiis -i dislinctis; ampuUae innalas v. nuUae: — 



