Eu-FloridetB, Monosporese, Monospora. 12i>9 



thamnion sessile Menegh. in Giorn. botan. ital. 1844, pag. 284, 

 Kuetz. Sp. p. 641, Tab. Phyc. XI. p. 21, t. 64, f. a-h, Callitha- 

 mnion botryticum De Not. Prosp. Fl. Ligust. p. 06 (sec. Berto- 

 loni), Callithamnion comosum Kuetz. Tab. Phyc. XI (1861) p. '21, 

 t. 65, f. a-b? (non Harvey), CalliUiamnion utriculosum Knctz. 

 Tab. Phyc. XI (1861) p. 21, t. 66, f. a-c?. — Fronde erectiuscula, 

 dichotoino-decoinposita et alterne ramulosa, ramulis quoquoversum 

 egredientibus diehotoniis, ramellis ad genicula contractis, apicibus 

 cylindraceis snhattenuatis, nunc clavaeformibus ; sporangiis elli- 

 psoideo-obovatis interiore ramellorum latere subaxillaribus. 



Hab. in siim lugdunensi-gallico ad Massiliam, Nycaeam etc. 

 (Castagne, Solier, Perreymond, J. Agardh); in mari Ligustico, 

 passiui (Ardissone, Caldest, De Notaris, Dufour, Strafforello); 

 in mari Jonico ad « Acireale » Siciliae (Ardissone) et in Mediter- 

 raneo inferiori ad « Licata » ejusdem insulae (V. Beltrani); in inari 

 Adriatico, passini ad littus Istriae et Dalmatia? (Hauck, Zanardini, 

 Titius, Sandri); in oceano Atlantico a littoribus Angliae (Borrer, 

 Hutchins, Griffiths, Harvey) et Gallise (Bonnemaison, Le Jolis, 

 Crouan) usque ad Tingin Africae borealis (Schousboe). — Frons 

 plerumque 4-6 cin. alta, aliquando multo major, decomposito-di- 

 chotoma ramulisque <iuoquoversum egredientibus obsita. Ramuli 

 inferiores simplices aut furcati, superiores decompositi, ipsi nempe 

 ramulis adproximatis obsiti; ramelli terminales cylindracei brevis- 

 sime plerumque acuminati (in forma, quse clavatam nuncupant 

 nonnulli auctores, clavaiformes). Articuli diametro 4-10-plo lon- 

 giores, ad genicula contracti. Sporangia (indiviso contentu quasi 

 bulbillorum functionem habentia) interiore latere ramellorum, juxta 

 axillas, disposita, ellipsoideo-obovata, nunc apice ramorum in ra- 

 niiilis transformatis minutissimis plurima aggregata (solitariis con- 

 formia, at in diversis individuis) invo lucro ramulorum exteriorum 

 tecta. Praeter haec sporangia bulbilliformia, rarius occurrunt, sec. 

 Zanardini, sporangia triangule divisa sed sphserica (nec ellipsoideo- 

 obovata) ad latus interius ramellorum sessilia. Color roseo-carneus, 

 exsiccatione s;epe fuscescens. Substantia tenax, in aqua dulci cito 

 niutata, more Griffithsice. 



Monospora australis (Harv.) J. Ag. Epicr. L876) p. 610, Coryno- 2024 

 spora australis Harv. in Trans. Irish Acad. Vol. 22, pag. 559, 

 Phyc. Austral. tab. "253. — Fronde erectiuscula, setacea, sensim 

 dichotomo-decomposita ct alterne ramulifera, ramulis a caule cras- 

 siore quoquoversum pinnatim egredientibus elongatis mollibus sur- 



