Sylloge algarum omnium hucusque cognitarum

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 Annals
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-