254 Eu-Floi'ideae, Tylocarpejv, Alinfeltia. 



Species a j^ciiere excliideiKhe. 



32. Gymnogongrus amnicus Mont. Guyane n. 14 m .\nn. Sc. Nat. Bot. 

 1850, pag. 289, Syll. Crypt. n. 1558, est Sterrocladia amnica 

 (Mont.) Schmitz. 



33. Gymnogongrus ligulatus var. angustus Harv. Cliar. of Alg. n. 29, 

 est Cryptonemia angusta (Harv.) Okani. 



34. Pachycarpus IVIorelii Mont. et Mill. Alg. Rennion p. 6, t. 16, f. 2, 

 est forsan Callijmeniai sp. 



35. Gymnogongrus firmus Aresch. Phyc. extraeurop. p. (354) 28 est 

 Tyloti sp. 



36. Gymnogongrus Polyides Aresch. in Kuetz. Tab. Phyc. XTX, t. 70 

 est AJmfeltice sp. 



AHNFELTIA Fries [1835] Fl. Scan. p. 310(Etym. a cl. Ahnfelt), J. Ag. 

 Alg. Liebm. p. 12, Sp. Algar. II, p. 309, Epicr. p. 205, Schmitz 

 et Hanptfl. in Engl. & Prantl Naturl. Pflanzenfam. 142 (1896), 

 p. 366, Gymnogongri, Fuci, Chonclri, Plocarice, Polyideos, Gra- 

 cilaria', Gigartince, Sphcerococci sp. — Frons carnoso-cornea, tere- 

 tiuscuhi, dichotoma aut secundatim vel irreguhiriter ramoso-proli- 

 fera, stratis duobns cellularum constituta, interiore cellulis angu- 

 Latis subradiantibus, ssepe mox rotundatis stipatissimis, nunc mi- 

 noribus cinctis, axilibus nunc longioribus, exteriore lilis monili- 

 formibus verticalilnis muco solidescente cohibitis. Cystocarpia, an- 

 theridia et sporangia liucusiiue ignota. 



Obs. Organa qu£e J. Agardh descripsit ut cystocarpia frondi im- 

 mersa, clausa, nucleum compositum, disruptione partis fertilis demum 

 liberatum foventia, nucleolis in media fronde dense congestis (pla- 

 centaribus filis nnllis separatis) carposporas minutas rotundatas 

 plurimas sine ordinc conspicuo intra cellulas pmegnantes rotun- 

 dato angulatas conglob itas continentibus sec. Schmitz rem alienam 

 sistunt. Genus ergo quoad locum systematicum est obscurum usque 

 dum fructus genuini innotescant. Nemathecia sporangiorum pro 

 Ahnfeltia plicata ab auctoribus descripta genus Sterrocolax 

 Schmitz sistere videntur, eodem modo ut gen. Actinococco et Co- 

 lacolepidi nematliecia Gymnogoncjri et Phyllophorce adscribentur. 



1. Alinfeltia plicata (Huds.) Fr. Scan. p. 310, J. .\g. S^) II, p. 311, Epicr. 508 

 p. 206, cfr. liurfham On Repr. Org. Florid. (1893), p. 12, 1. 14, f. 43-44, 

 Fucus plicatits Huds. Fl. Angl. p. 589, Gmel. Fuc. tab. 14, fig. 2, 



