1712 Eu-Floridege, Hsematophloese, Pneopliyllum. 



simplicibus aut furcatis), nemathecia convexiusciila efficientia. An- 

 theridia ct cystocarpia ignota. 



1. Erythrodermis Alleni Batt. loc. cit. t. 414, f. 3-7. ^686 



Hab. in fragmentis vasi (argillacei ?) in oceano Atlantico pr. 

 « Plymouth » AngliLe (Ba.tters). — B^rondes G-7 millim. diam. 

 requantes, circiter 15 \u crassa;. Celluke 6-12 « 6-9 [x. Nemathecia 

 leniter elevata, ad 1 millira. diam.; nematheciorum filamenta siin- 

 plicia furcatave, unoquoque filamento e tetrasporangiis 4-6 consti- 

 tuto. Tetrasporangia subglobosa, 9-12 [x. diam. 



RHODOPHYSEMA Batters [1900] New or crit. Brit. mar. Alga3 p. 377 

 (Etym. 7-hodos roseus et phijsao tumefacio). — Frons pulvinata, 

 epiphytica, hemisphserica, globosa aut piriformis, subinde pliis 

 minus plicato-rugosa. Stratum medullare e celhilis magnis, hyalinis, 

 rotundato-angulatis, versus peripheriam minoribus constitutum. 

 Cellula3 corticales paucistromaticre, minut^, colorata?, conferta^. 

 Tetrasporangia cruciatim divisa, in soros externos convexos con- 

 gregata, paraphysibus gracilibus, rigidis, furcatis, pauci-articulatis 

 concomitata. 



Ohs. Mea sententia, hoc genus cum Halosaccio quandam simi- 

 litudinem pra^bet quoad tetrasporangia et stucturam frondis, sed 

 cystocarpiis ignotis nullum ccrtum judicium ferre licet. 



1. Rliodophysema Georgii Batt. loc. cit. t. 414, f. 8-13. 2687 



Hah. in foliis Zostera^ in oceano Atlantico ad «Scilly Island » 

 (George). — Frondes 0,1-1 mm. diam., gregatim crescentes et plus 

 minus confluentes, leves, sublubrica^, purpureo-rubrse. Sori 50-300 jj.. 

 lati. Tetrasporangia oblonga, 20-36 ^ 14-18, sessilia. Paraphyses 

 falcata?, subclavatae, 3-4-articulate, cellulis 6-9 ^ 3-4. 



PNEOPHYLLUIVI Kuetz. [1843] Phyc. gener. p. 385, Sp. (1849) p. 695 

 (Etym. pneo inflo et phyllon folium), Engl. & Prantl Natiirl. 

 Pflanzenfam. (1897) p. 537. — Frons minutula, foliaceo-expansa, 

 incrustans, pallida, e cellularum stratis pluribus formata. Cellulie 

 inferiores majores rotundce laxe coalitce, superiores (corticfiles) mi- 

 nutissimae globosie, omnes inordinatai. Fructus ignoti. 



Ohs. Mihi plane ignotum genus, forsan CoraUmaceis, resp. 

 Mclobesieis adscribendum, earundem primordia evolutionis reprae- 

 sentans. 



