1594 Eu-Florideae, Grateloupiacese, Polyopes. 



17. Prionitis ? Clevelandii Farl. On some Alg;e new to the United 2512 

 States p. 242. — Fronde coriacea, substipitata, repetite tiabellatim 

 prolifera, inferiori parte subcostata, demum irregulariter perfo- 

 rata; prolificationibus a disco aut intra marginem exeuntibus. 



Hah. ad « San Diego » Caiifornise (Cleveland). — Structura 

 Prionitidis. Fructus ignoti. Habitu refert Iridmam laceram Post. 

 et Rupr. 



Species a genere removenda. 



18. Prionitis angusta Okam. Contrib. Knowl. Mar. Alg. of Japan III 



(1899) p. 3 est Pohjopes angustus (Harv.). 



POLYOPES J. Ag. [1849] in Act. Holm. 1849, p. 85, Sp. II, p. 238, 

 Epicr. p. 147, Till Alg. Syst. IV, p. 16 (Etym. poly multus Qipous 

 pes aut ope foramen ?), Engl. & Prantl Natiirl. Pflanzenfam. (1897) 

 pag. 513, Ch07idri, Gelidii, Spha^rococci, Fuci sp. — Frons car- 

 noso-cornea, ex tereti compressa, dichotomo-fastigiata, stratis duo- 

 bus constituta: interiore filis ramosis et reticulatim anastomo- 

 santibus; exteriore filis verticalibus moniliformibus muco solide- 

 scente cohibitis constante. Cystocarpia certis locis aggregata plu- 

 rima, in cryptis s;epe pUiriseriatis, intra stratum corticale exca- 

 vatis et secedentibus filis apertis, nucleum adparenter simplicem, 

 strato proprio circumnucleari, filis reticulatim anastomosantibus 

 ad carpostomium conducentibus constituto, cinctum foventia; nu- 

 cleus a plexu filoriim interiorum sensim transmutato ortus, cel- 

 lulis matricalibus pluribus certo ordine vix dispositis, demum car- 

 posporas plurimas, minutas, rotundato-angulatas, gelatina ambiente 

 sine ordine conspicuo cohibitas fovens. Tetrasporangia inter fila 

 corticalia subnematheciose evoluta densius sparsa, oblonga, cru- 

 ciatim divisa. 



Obs. Frondes teretiusculfe aut ex tereti compressa^, dichotomo- 

 fastigiatfe, segmentis linearibus, hic illic constrictis, e strictura pro- 

 lificantibus, recentes subcarnosaB tenaces, exsiccatse subcornese, pur- 

 purascentes. Stratis duobus frons constituitur. Interius stratum con- 

 stat filis longitudinalibus seu cellulis cylindraceis elongatis, dense 

 intertextis, ramosis et anastomosantibus, extrorsum in fila periphe- 

 rica arcuatim excurrentibus. Fila peripherica densissima verticalia, 

 cellulis rotundatis moniliformiter seriatis constantia, muco solide- 

 scente conjuncta. Cystocarpia frondi omnino immersa, certis locis 

 plus minus intumesceiitibus et a cetera fronde quasi levi strictura 



