360 Confervoideae, Cladophoraceae, Spongocladia. 



Species mihi tantum nomine nota. 



0. Siphonoclatlus psyttaliensis Schmitz Ueber griine A.lgen aus Athen ^r.G 

 in Sitzungsh. d. Naturf. Gesellsch. zu Haile 1878, p. 20. 



Hab. in insula Psyttalia sinus neapolitani in mari niediterra- 

 noo (F. SCHMITZ). — Schmitz zoogonidia in hac specie observavit. 



SPONGOCLADIA Aresch. [1853] in CEfvers. af Kongl. Vetensk. Akad. 

 Furhandl. X, pag. 201 (Etym. a spongos spongia et clados ra- 

 mus), Hauck Sopra alcune Alghe deiroceano Indiano pag. 2, Mur- 

 ray et Boodle On the structure of Spongocladia Aresch. in An- 

 nals of Pjotany vol. II, n. VI, pag, 109 (1888), Spongodendron 

 Zanard. [1878] Phycefe papuan?e in Nuovo Giornale botanico italiano 

 X, p. 37. — Thallus viridis, spongiformis, adnatus, filamentis cel- 

 lularibus, laxe iraplexis contextus; filamenta unica cellularum serie 

 constructa, inferne parce ramosa, acrogenia; cellulse inferiores bre- 

 viores, superiores longissimse, tubuliformes, vaucheriaeformes, utr;Te- 

 que intus granulis chlorophyllosis vestitae; zoogonidia in cellulis 

 tubuliforraibus evoluta. 



Obs. Genus quodammodo Siphonoclado Schmitz peraffine, sec. 

 nonnuUos auctores ad Cladophoram transiens. 



1. Spongocladia vaucheriaeformis Aresch. I. c, Murray et Boodle 1. c, ^rn 

 p. 175, f. 8-11, Hauck Sopra alcune Alghe deiroceano Indiano III, 

 Spongodendron crassum Zanard. Phyc papuanne n. 12. — Thallo 

 extus coloris griseo-flavescentis vel griseo-albidi, intus viridis, 7- 



10 cra. (rarius ultra) alto, crespitoso, a basi digitato-dichotomo, 4-8 

 mm. crasso, tereti seu compresso, apicibus nunc subattenuatis, nunc 

 incrassatis vel incrassato-truncatis. 



Hab. nd littora insulse Mauritii, Li thothamni i s innascens 

 (Aresgiioug, Pike), et ad aSorong» (nec in insula Aru) Nova? Gui- 

 ne;e (0. Beccari), ad ((Singaporo» (E. Kassel). --• Specimina ad 

 «Singapore)) lecta (qu;e forte varietatem novam sistunt) priebent, 

 sec. Hauck, frondem teretem vel compressam, 5-25 mm. crassam, 

 irregulariter dichotomam et digitatam, 10-25 cm. altam, filamonta 

 frondem constituentia 50-200 a. lata, rigidula, initio inarticulata, 

 dein articulata. 



2. Spongoclaclia dichotoma (Zanard.) Murray et Boodle On the stru- iins 

 cluro of Spongocladia p. 175, Spongodendron dicho(omum Za- 

 iiard. Phyc papuan:"' ii. KJ. — Thallo gracili, filiformi, irregula- 



