510 



2:C Eu-KIoriilcse, Tylocarpca?, Alinfeltia. 



vata longitudinaliter fatiscit et stratum exterius al) interiore sol- 

 vitur; exsiccata ante alias cornea subpellucida. Raniificatio, ut in 

 Ahnf.pUcata nwwc dichotomo-decomposita segmentis supra siuum 

 subacuminatum erectis, nunc prolifera prolificationibus ssepissime 

 unilateralibus fere liorizontalilnis, plurimis abbreviatis obtusis at- 

 (lue crassis. Color fere antecedentis. ln<iuirendum, an ad lianc spe- 

 ciem pertineat Sph. plicatus Mont. Fl. Boliv. p. 30, cujus speci- 

 men juxta Callao lectum nematheciis (?an pseudo-nematheciis) he- 

 misphfiericis onustum fuit. 



3. Ahnfeltla concinna J. Ag. Alg Liebm. p. 12, Sp. II, p. 312, E- 

 picr. p. 207, Spha')^ococcus concinnus var. immersus Ag. Sp. 

 p. 312, Syst. p. 234, Gymnogongrus implicatits Kuetz. Sp. p. 789, 

 Tab. Phyc. XIX, t. 69, J. Ag. Sp. II, p. 312, Sphccrococcus im- 

 plicatus Kuetz. mscr. in Herb. Berl. (1841), Tylocarpus implicatus 

 Kuetz. Phyc. gener. p. 411, Ahnfeltia Polyides Aresch. Phyc. ex- 

 traeurop. (1854) p. (355) 29?, Gymnogongrus Polyides Aresch. in 

 Kuetz.Tab. Phyc. XIX, t. 70?. — Fronde cornea, subtereti,decompo- 

 sito-di-trichotoma et a ramis subsecundatim prolifera, proIiFicatio- 

 nibus segmento conformibus scepe fasciculatis, segmentis supra si- 

 num acutiusculuni subdivaricato-patentibus. 



Hah. in oceano Pacifico ad insulas Sandvicenses (Chamisso, Gau- 

 dichaud); ad insulas «Chincha» prope littus Peruviaj (Oersted, 

 Hayn) nec non ad «Paita» (Piccone, Exp. Vettor Pisani) — Ahn- 

 feltid gigartinoide J. Agardh major, 10-15 cm. long. diametro 

 1,5 millim. fere sequans, inferne obsita prolificationibus secun- 

 datis, nunc fasciculatim 2-6 a caule exeuntibus, nunc magis 

 sparsis, simplicibus aut furcatis, superne dichotomo-decomposita. 

 Segmenta teretiuscula aut infra furcas levissime compressa, exsic- 

 catione collabentia compressa, nunc (an inchoante fructificatione?) 

 coiTugato-flexuosa ramosissima. Axillae cximie patentes, segmentis 

 omnibus angulo 45" separatis, strictis. Cystocarpia (sec. cl. J. Agardh) 

 in segmentis superioribus numerosa approximata, subhemisphserico 

 a fronde prominentia (an genuina?). Color purpurascens aut expo- 

 sitione demum virescens. Substantia cornea. 



4. Ahnfeltla Durvillael (Bory) J. Ag. Sp. H, p. 313, Epicr. p. 207. 5ii 

 Polyides Durnlloii Bory Voyage Coquille n. 38, Chondrus um- 

 bellatus Kuetz. Tab. Phyc. XVII, t. 58, Plocaria Durmltici Mont. 

 Fl. Chil. VIII, tab. 16, fig. 2, Ptocaria concinna Mont. Voy. Bo- 

 nite (non Ahnfeltia concinna J. A^.). — Fron4e subcarnosa, to- 



