Iui-FI()i'i'U'a', KhoiloiiliyllideiG, AiMiitlioi-occiis. 351 



Rauii patriites vel divaricati, niiiic tlabcllatiiii miiitirnli, nuiic pin- 

 nati et subpinnati, socumlarii nunc breves sul)siiiiplici's, nunc lou- 

 gissimi, ramosissimi. Ramuli per totam frondem sparsi, apiccm 

 versus crebriores, erecti et erecto-patentes, subulati, 2-8 niillim. 

 longi, alterni vel saepius secundi, simplices vel parum divisi. Cy- 

 stocarpia solitaria. globosa, spinis 4-6 magnis subulatis armata, in 

 apicibus r.unulorum immersa, carposporis numerosissimis minutis 

 repleta. Color intense ruber, siccitate obscurior, Substaiitia firma, 

 cartila^ineo-carnosa. Specimina exsiccatione cbartie adha3rent. 

 . Acanthococcus splnuliger J. Ag. in Act. Holm. OtVers, 1840, 069 

 p. 87, Sp. II, p. 437, Epicr. p 350, Hariot Algues (Mission du Cap 

 Horn) pag. 80, n. 160, Spluvrococcns subulatus ,3. nigrescens Ag. 

 Syst. p. 339, Gracilaria ? nigrescens Hook. et Harv. Flora Ant. 

 p. 477, Spha^rococcus nigrescens Kuetz. Sp. p. 777'?, Gracilaria? 

 ohtusangula Hook. et Harv. in Lond. Journ. IV, p. 2(10, Cgstoclo- 

 nium ? obtusangulum Kuetz. Sp. p. 757, Tab. Pliyc. XVIII, t. 17, 

 Gigartina spinifera Kuetz. Sp. Algar. pag. 750, J. Ag. Sp. II, 

 p. 289. — Fronde filiformi, subcarnosa, firma, dichoto.no-ramosis- 

 sima, ramis ramulisque a basi latiori longe acuminatis patentissi- 

 mis; cystocarpiis ignotis. 



Hab. ad Caput «Horn» (Hooki^u), «Punta Arenas » (M.\rca.cci), 

 insulas Maluinas (Gaudicha.ud, Freycinet). — Cciespes fere se- 

 mipadalis. Frons filiformis. crassitiem pennaj passerinoe vix su- 

 perans, ramosissima. Ilamificatio ' inter dichotomam et ramulosam 

 intermedia. Rami elongati, Sciepe incurvi et extrorsum raniis sub- 

 secundatis ornati. Ramuli ramis confornies at breviores. 4-5 mil- 

 lim. longi, a basi parum crassiori in apicem acutum attenuati. 

 Ratiii ramulique omnes patentissimi , angulo fere 45° exeuntes 

 sed dein incurvati. Color alg;e madefactfe carneo-rubens, exsiccatfe 

 nigrescens. Stratum medullare constat cellulis cylindraceis, diame- 

 tro 4-pIo longioribus, concatenatis in fila 2-3cliotoma anastomo- 

 santia, arcuatim inter cellulas strati intermedii in superficiem ex- 

 currentia. Cellulse strati intermedii rotundato-oblongse, magnae, dia- 

 metro 2-4-pIo longiores. Consistentia firiniore, colore, structura 

 atque loco natali diversissimo a sequente distat. Characteres vero 

 oegre inveniimtur, nisi in fructuum dispositione ditferentia^ adessent. 

 J. Ag. Sp. II, p. 437. Ob frondem filiformem (nec compressam) 

 forsan aptius est hfec species generi Mijchoclece adscribenda. 

 Acanthococcus ? subulatus (Pott ) J Ag. Alg. Sp. II, p 438, Epicr. 67o 

 p. 351, Fucus subulatus Pott mscr. in Hb. Mertens, Sphccrococcus 



