334 rhn^ozoosporiiiw, Lnmiiiariaceaj, \;,'arnm. 



AGARUM Bory [1826] in Dirt. rlass. IX, p. 193 excl. sp.. Post. et 

 rtupr. niustr. Algar. p. 11! 'Rtym. Agar nomeu. teste Rumpliio, 

 onuiiuui Fucorum apud Malaios}. J. Ag. Sp. I, p. 140, Humphrey Anat. 

 and Develop. of Agar. Turneri 1886, De Toni Syst. Uebers. Fu- 

 coid. 1891, p. 177, Kjellm. in Engl. & Prantl Natiirl. Pflanzenfam. 

 97. Lief., p. 256, Myviotrcma De la Pyl. [1829] Fl. Terr. Neuve p. 

 23, LaminaHce et FKci sp. auct. veter. — Frons mediocris, sti- 

 pitem laminamque foliaceam prsbens; stipes simplex, solidus: la- 

 mina indivisa terminalis, mediocostata, plana, cribroso-foramiuu- 

 losa (ut videtur perdurans) ; adparatus adha?sionis in planta adulta 

 e filis rhizoideis constans. Sori sporangiorum in lamina? utraque 

 pagina maculas irregulares efRcientes. 



1. Agarum Turneri Post. et Kupr. Illustr. p. 12. tab. XXII. .1. .\g. 

 Sp. p. 141, Humphrey Anat. Devel. Agar. Turn. 1. c, .\resch. Olis. 

 Phyc. IV, p. 17, Agaram. crihrosnm Bory Dict. CI. IX. p. 193 

 ex parte?, Fucus cribrosus Mert. jun. in Linn. IV, p. 52, Fiicus Aga- 

 rum Turn., Hist. t. 75!, Fl. Dan. t. 1542. Lyngb. Hydroph. Dan. 

 p. 24, Ag. Sp. I, p. 109 et Syst. p. 269, Laminaria Boryi De la, 

 Pyl. FI. Terr. Xeuv. p. 28 ?, Fucus Clathrus Esp. Fuc. t. 128, La- 

 luinaria Agarnm Lamour. Essai p. 22, non De la Pyl. — Stipite 

 compresso coriaceo, costa vix latiore- continuato, lamina membra- 

 nacea, foraminibus margine planis, majoribus minoribusque ubi- 

 (lue intermixtis. 



Hah. in mari septentrionali Asiam Americamque utrinque al- 

 luente: ad Groenlandiam (Vahl! , ad oras CamciatcjB (Mertens!) 

 et Japonise flv.iEi.LM.w, Ok.a.mur.\, De Toxi); in fretu Behringiano 

 (Kjellm.\.\) et ad littus Californiifi (Anderson). — Stipes 4-15 n\\. 

 longus, basi teretiusculus, superne compressus et saepe apice tortus 

 deni^pie continuatus costa vix 5 mm. lata, fere omnino plana, sed 

 substantia evidenter flrmiore quam ipsius laminEe. Lamina juve- 

 nilis circumscriptione lanceolata, basi fere ovata : ut adolescit, basi 

 inagis cordata evadit et ambitus flt late ovatus. Foramina in juvenili 

 plantM pauca. in adulta numerosa. luajora vix 7-S nnn. diametro 

 a:'quantia. minorilius vix 2 umi. apfrtis intermixta. marginibus 

 omnium planis. 



2. Agarum Gmelini .Mrrt. iu I.inuira IV. p. rA. Post. et Rupr. Illustr. 

 p. 11, t. 20-2L J. .\g. Sp. I. p. 141, Agarum crihrosum Bory 

 Dict. class. IX. p. I'.t2 rx parto, Fucus Agarum Gmel. Hist. Fuc. 

 p. 210, tab. 32. — Stipiti' compresso. costa duplo latiore conti- 



