15S6 Eu-Floridese, Gratelovipiacese, Prionitis. 



immutata) simplex fiircatave. Structura densissima. Fructus ignoti. 

 Color saturate purpureo-rufus. Substantia firma, cartilagiuea. 



DERMOCORYNUS Crouan [1858] in Ann. Sc. Nat., Botan., ser. IV, Tom. IX, 

 Fl. Finist. (1867) p. 142 (Etym. derma cutis et coryne clava), Engl. 

 & Prantl Natiirl. Pflanzenfam. 1897, p. 513. — Frondes e strato 

 membranaceo omnino matrici adhterente erecta^, solitaria^ aut plu- 

 res adproximatre, parum longse, simplices, inferne teretes, superne 

 subclavgBformi-incrassatoe, structuram manifesto filamentosam prye- 

 bentes. Stratum interius (medullare) tenue filamentosum, rhizoidi- 

 bus percursum, in partibus superioribus frondis laxum; stratum 

 corticale ut in gQn. Grateloupia. Fructus utriusque generis in 

 segmentis superioribus clavato-incrassatis sparsi. Cystocarpia mi- 

 nutissima, omnino immersa, rotundata vel cordiformia. Tetraspo- 

 rangia cruciatim divisa, numerosa adproximata, strato corticali 

 immersa. 



1. Dermocorynus Montagnei Crouan loc. cit. t. 3, f. 1, a-d, Fl. Fi- 2495 

 nist. p. 142, tab. 13, gen. 94. 



Hal). ad fragmenta silicea in oceano Atlantico ad littus Gal- 

 lite (Crouan). — Frondes simplices, subcylindracea^, conic?e aut 

 clavata3, 1-6 millim. longa?. Color roseus. 



PRIONITIS J. Ag. [1851] Sp. II, p. 185, Epicr. (1876) p. 156 (Etym. 

 pi'ion serra), Engl. & Prantl Natiirl. Pflanzenfam. (1897), p. 513, 

 Sphcerococci, Gelidii, Chonclri , Phyllotyli , Gigartince (?) sp. 

 auct. — Frons carnoso-cartilaginea, compressa, linearis, dichotoma 

 aut subpinnata, nunc a disco vel margine glandulosa aut phyllis 

 prolifera, stratis fere tribus contexta: interiore amplo cellulis fi- 

 liformibus densissime intertextis, intermedio cellulis rotundati-^, in 

 corticales minores verticaliter radiatas sensiin abeuntibus. Cysto- 

 carpia frondi immersa, in cryptis intra stratuin corticale excavatis 

 et seredentibus filis apertis nucleum adparenter simplicem, supra 

 stratum placentare, filis tenuibus a cellula pauflo majore radian- 

 tibus constitutum, adfixum foventia; nucleus a plexu filoruin sen- 

 sim transmutato ortus, cellulis matricalibus pluribus, certo ordine 

 vix dispositis coalescens, demum carposporas plurimas, minutas, ro- 

 tundato-angulatas, gelatina ambiente sine ordine conspicuo cohibi- 

 tas fovens. Tetrasporangia in phyllis glandulisve marginalibus pro- 



