41 G HELMINTHOCLADE*:. Helminlhora. 



Tozzettiano genere, itlonticum. Hoc ub omnibus liotliernis Algologis 

 recepto, noruen rriosianum aptissimum diverse quidem, at aflini 

 genmi, usurpare licitnm sit. Speciem typicara alii auctores diversis 

 generibus adnumerarunt. Ipse bane in Alg. Med. Dudrcsnayae ad- 

 numeravi, structura ulriusque fere consiiuili, si tanttim plantas mn- 

 turas, diversissima si jnnioroni respicias. Kiitzing Nemalioni Uel- 

 minthoram conjunxil; a quo vero genus satis diversum mibi videtur. 



1. II. DIVARICATA (Ag. Syst. p. 51) fronde teretiuscula sulxequali 



vage quoqiioversum ramosissima, ramis subaequalibiis obtusis. 



Mesogloia divaricata Ag. Syst. p. 5i ! Mont. Cr. Nouv. Fr. p. 7. Kiilz. 

 Phyc. p. 332. 



Dudresnaya divaricata J. Ag.; Harv. Phyc. Brit. lab. CX! 



Nemalion divaricatum Kiilz. sp. p. 713! 



Mesogloia Hudsoni Harv. in Hook. Br. Ft. II. p. 386. Man. p. M 

 (excl. syn. Ag.)! 



Dudresnaya cupressina Bonnem.f 



Ulva rubens Ihids.? 



Exs. Wyalt. Damn. n:o 99! 



Ilab. in oceano atlantico a littore Scotioe usque ad Cades 

 (Cabrera !). 



Frondes a radice minuta 6-8-pollicares, diametro linea? dimidioe, 

 T.qualem ubique servantes crassitiem, dcnsissime ramosse. Rami quo- 

 quoversum egredientes patentissimi, vagi et quandoquidem oppositi, eodem 

 modo densissime pinnatim et divaricate ramosi. Ramuli ramis primariis 

 vix tenuiores, divaricati, densissimi, flexuosi, obtusi. Substantia gelali- 

 nosa subelaslica. Churtae arctissime adbcTret. Color pallide purpurascens. 



Species mqnirenila. 



2. NEMALION CLAVATUM (Kutz. Sp. Alg. p. 7 1 3) fronde filiformi ra- 

 mosissima, ramis adproximatis patentissimis, ramulis apice leviter 

 incrassatis frucliferis. Longit. 4 G". Crassities *J 6 } ^'". 



Ilab. in raari Germanico. 



LXV. NEMALION Dub. Bot. Gall. p. 959. J. Ag. Symb. Cont. 

 I. p. 453. Alg. med. p. 87. Nemalion sp. Targ. Tozzett. in 

 op. mscr. Kutz. Sp. Alg. p. 7 12 (excl. spec.) Helminlhora 

 Fries (excl. spec.) Aresch. Enu.n. p. 94. Mesogloiae et Cbor- 

 dariic sp. Ag. et Auct. 



