1614 En-Florideae, Grateloupiacese, Thamnoclonium. 



THAMNOCLONIUM Kiietz, [1843] Phyc. gener. p. 302, (Etym. thaninos 

 ctespes et clon ramulus), Harv. Phyc. A.ustral. t. 293, J. Ag. Sp. 11, 

 p. 1131 in not., Epicr. p. 107 partim, Mori^h. Florid. t IX, Till 

 Algern. Syst. IV (VII) p. 18, Engl. & Prantl Natiirl. Pflanzeufain. 

 (1897) p. 514. — Frons plus minus complanata, dichotoma aut 

 varie ramosa, verrucis prominulis muricata et tunc rugosa, cellu- 

 larum stratis duobus contexta: interiore filis aut cellulis elongatis 

 arctissime conjunctis, corticali denso cellulis hrevioribus in series 

 verticales conjunctis interioribus majoribus, extrorsum magnitudine 

 gradatim decrescentibus. Fructus utriqne in phyllis minutis, su- 

 perficie everrucosa continua distinguendis evoluti. Cystocarpia 

 intra stratum corticale in fila verticalia evolutum immersa, nucleum 

 adparenter simplicem, ambitu definitum, secedentibus filis demum 

 liberatum foventia; nucleus filo basilari adfixus suhsphan-icus, 

 intra lobos obconicos a puncto basali radiantes arcte conniventes 

 carposporas plurimas, rotundatas, sine ordine conspicuo conglobatas 

 et quasi muco cohibitas continens. Tetrasporangia in phyllis aggre- 

 gata, in strato corticali nemathecioso-incrassato nidulantia, cru- 

 ciatim divisa. 



Ohs. A Thamnoclonio eximie distinguenda^ sunt Codiophylli 

 species fronde in lacinias fenestratas soluta insignes. Cum Thamno- 

 cloniis ssepe soci^iliter crescunt spongim nonnulla^. 



/. Fr ndes subteretes, prolificatione quoquoversum ramosse, juveniles subclavatae, 

 racbide ipsa planato-angulata, ramis adultioribus sensim inferne denudatis, 

 racbide teretiuscula. 



1. Thamnoclonium claviferum J. Ag. Epicr. p. 1G8, Thamnoclonium 2545 

 hirsiUam Harv. Phyc. .^ustral. tab. 293, Kuetz. Tab. Phyc. Vol. 

 XIX, tab. 47 (sed haud Kuetz. Sp. pag. 793). — Frondibus 

 subteretibus, quoquoversum ramosis, ramis juvenilibus subclavatis 

 simpliciusculis, rachide planato-angulata circumcirca densissime 

 vestita, verrucis strato subcontiguo rachidem velantibus; ramis 

 aduItioril)us demum longe sursuni denudatis teretibus; phyilis fru- 

 ctiferis nudis complanato-crispatis, rosulas laterales et subtermi- 

 nales formantibus. 



Hab. ad oras australes Nov;e HoIIandiio et Tasmauias. — Vor- 

 rucfe singuIiB densissime tuberculatic setisque hyalinis obsit;e. 

 Frondes ex eodem adparatu radic.ili expanso, rigido, 2 cm. et ultra 

 lato egrediuntur 12-25 cm. long*, inferne simplices (aut stipitat») 



