498 Plia^ozoosporinas, Sphacelariacese, Battersia. 



a. Oryana iiropagationis in axillis ramornm normalinm ovoliitn. 

 Halopteris Knetz. — Orgnna propagationis singulatim in axillis o])venientin. 

 Stypocaulon Knetz. — Contextns axillaris organa propagationis gignens mnl- 



ticellnlaris; organa propagationis ciespitose aggregata. 

 Piiloiocaiilon Geyl. — Contextus axillaris organa propagationis gignens e serie 



transversa singula brevi cellularum 2-3 gametangia seu sporangia evol- 



vente constans. 

 b. Organa propagationis in axillis ramilicationum ramorum propriorum ad- 



ventitiorum evoluta. 

 Anisoclachi,s Reinke. — Rami fertiles aequaliter sparsi, e regionibus adultio- 



ribus raraorum elongatorum exorientes. 

 Plilopoyon Reinke. — Rami fertiles ca9S[3ltose aggregati e corpore centrali pcr 



cortices erumpentes. Rami majores parcnchymatice corticati ut in Clado- 



stepho. 

 1 Xanthosiplwnia J. kg. [Genus quoad afflnitatem dubium]. 



SPHACELODERMA Kuck [1894] Bemerk. Algenveo-. Hel<>oland p. 233 

 (Etyni. sphacelos gangrcena et dernia cutis). — Thallus crescen- 

 tia marginall donatus, crustfeformis , quandoque paucistratosus, 

 atro-brunneus, omnino decumbens, filis erectis discretis nullis. 

 Phfeophora numerosa, lamin^ieformi-rotundata h. e. lenticularia. Pili 

 liaud evoluti. Sporangia unilocularia globosa e transformatione di- 

 recta cellularum superficialium efformata, prominula, in soros con- 

 juncta. Sporangia plurilocularia ignota. 



1. Sphaceloderma helgoland"Cum Kuck. Bemerk. Algenveg. Helgoland 8:9 



(1894), p. 232, fig. 7. — Characteres generis. 



Hab. ad lapides in profunditate 5-10 met. prope insulani Hel- 

 golandiam (P. Kuckuck). — Cellularum parietes Aqu£e Javellei 

 ope eximie nigrescunt. Tecte Kuckuck, a Lithodermate onaculifor- 

 mi Wollny et a Phceocladia prostrata Gran, qu?e species primo 

 obtutu Sphacelodermati simillima3 sunt, characteribus exhibitis 

 differt. 



BATTERSIA Reinke [1890] in Ber. deutsch. bot. Gesellsch. Vni. 

 Band p. 205, Vergl. Anat. Morph. Sphacelar. 1891, p. 4, t. I (E- 

 tym. a claro phycologo anglico E. A. L. Battehs), Nuova Notari- 

 sia 1891, p. 455, Kjellm. in Engl. & Prantl Natiirl. Pflanzenflam. 8G. 

 Lief. p. 195, De Toni Syst. Uebers. Fucoid. 1891, p. 180. — Thal- 

 lus crustaceus, stratosus, habitu Ralfsicu, stratu ccllulari superiori 

 stipitcs fructiferos simpliccs vel ramosos in soros coUectos emitten- 

 te. Sporangia unilocularia in stipite fructifero terminalia vel ad 

 ejusdcm ranuilos laterales inserta. 



