PlueozoosporiliEe, Dcsmarosf.iacoae, Dosmarcstia. 455 



— l<'rondo setacea, basi siaiplici, supenie irregulariter deconiposito- 

 r.niiosissiinn, ramis alternis, patentibus, flexuosis, raniulis oninibus 

 palulis, niultilidis, apice acutis; sporangiis nunierosissimis, sparsis. 



Hah. \n freto niagollanico (Leguillou), ad Terrani Foci (Hoo- 

 icKR, II.vRiOTj et insulas Maluinas (Lessox, Hooker}. — Structura 

 D/i-/ifOS/p/in»is. Color algtc olivaceus. 



Scytothamnus australis (J. Ag.) Hook. ot, Ilarv. iu Lond. Jouni. 

 llot. IS|,-,. [,. .-,:il, ITook. Fl. N. Zol. p. 'JPJ, Kuotz. Sp. p. ,",17, 

 Tab. riiyc. Vlll. t. 1-J. .1. .Vg. Sp. 1, p. Cl^ Till Algorn. Systoui. IV, 

 ji. {>-2. Chof(((i/'/u ((i(.sl/-(iL/s J. .Vg. Symh. 1, p. .17. — Frondo o to- 

 roti subcomprossa, liasi inuliiisrul.i. a inoilio vage rainosa, runiis 

 ultimis acuminatis, 



Ildb. ad oras Nov;o Zolaiidiic (Ilb. Acii, Richard, Hooker), ad 

 Caput Horn et insulas Maluinas (Hooker). — Frondes a callo ra- 

 dicali plures ca3spitose surgunt vix semipedales, basi nudiuscuhic, 

 crassitie penn« corvinae, teretes (vel aliquando compressfe) a medio 

 ramis va.^is multoties decompositis, multo tenuioribus. attamen ri- 

 gidiusculis, ultimis acuminatis, obsita', Substantia firma ita ut 

 frons cbartie non vol laxe adhsereat, Color roseo-olivaceo-fuscus. 



Familia XVII. DESMARESTIACE^] (Thur.) Kjellm. 



Ucsm'(rjs/.i((CC(C Tliiir, [1863] iii Lo .lol. I.ist, Alg. Chcrb. \k~\ (Desivarcstiea'] 

 Kjellm. [1880] Emim. pl. Scaiul. ii, 10, .Mg. of Arct. Sca |i. 261, in Eiigl.<fc 

 Prantl Naturl. Fflanzenfam. 86, Lief., p- 203 (excl. Arilt)-or-ladio),l)(i Toni 

 Syst. Uebcrs. Fiicoid. 1891, p, 170. 



Frons calli radicalis disciformis ope affixa, filiformis aut compres- 

 so-plana quandoque costata, abunde opposite aut alterne ramosa, ra- 

 mis ditformibus h. e. longioribus brevioribusque, his ffitate provecta 

 sspe dentiformibus; stratuin interius chlaniydis e cellulis inajquali- 

 bus, majoribus elongatis minoribusque rotundato-angulatis constans. 

 Crescentia frondis trichothallica. Sporangia sub puncto vegetationis 

 frondis e transformatione cellulae contextus superficialis seu corticalis 

 exoi-ientia, solitaria. 



DESMARESTIA Lamour. [1813] Essai p. 23 (Etym. a claro Desma.rest), 

 J. A.u. Sp. L p. 165, Kuetz. Sp. p. 570 et Phyc. gener. tab. 26, I 

 (anatomia^, Wille Algernes physiol. Anat. (1885), De Toni Syst. 

 Uebers. Fucoid. 1891, p. 179, Kjellm. Handbok I, p. -18, Engl. & 



