Eu-Florideie, Grateloupiacese, Prionitis. 1587 



venleiitia, strato corticali ainpiiiis evoliito fere ncniatiiocioso im- 

 mersa, sparsa, oblonga, crnciatim divisa. 



Obs. Observationes sequentes de suo genere conscriptas con- 

 signavit clarus J. Agardli. Frondes firmte, carnoso-cornea), com- 

 presso-plana>, marginibus rotundatis, ecostata?, lineares, ramifica- 

 tione dichotoma aut pinnata plus minus decomposita!, margine 

 giandulis minutis, ciliis phyllisve demum evolutis ornatie, aliquando 

 a disco prolifera3. Stratis fere tribus diversis context;e sunt fron- 

 des. Stratum centrale mognopere evolutum maximam partem frondis 

 constituit, filis longitudinalibus densissime intertextis, granuloso en- 

 dochromate s;epe farctis, articulatis, articulis clavaiformibus. Celluke 

 rotundato-angulata^ serie multiplici dispositte, peripheriam versus 

 minores, medium stratum cingunt; snperficiale stratum cellulis 

 rotundatis aut subsimplici serie dispositis (in partibus senilibus) 

 ant plus minus in fila verticalia moniliformia prolongatis. In seg- 

 mento glanduhie aut folioli fertilis axis filis longitudinalibus, pe- 

 ripheriaui versus magis anastomosantibus et in reticulum conjun- 

 ctis, occupatur; periphericum stratum filis moniliformibus verti- 

 calibus constat. 



1. Prionitis microcarpa (Ag.) J. Ag. Sp. II, p. 187, Epicr. pag. 157, 2496 

 Sphcurucoccu.s microcarpas Ag. Sp. p. 255, Syst. p. 218, Clion- 

 drics niicrocarpus Kuetz. Sp. p. 737, Phyllotylus microcarpus 



J. Ag. Alg. Liebm. p. 9, Gigartina microcarpa Sond. in Linn;iea 

 XXVI, p. 517?, Chondrus coarctatus Kuetz. Tab. Phyc. XVII, 

 t. 60??. — Fronde inferne teretiuscula, superne compressa, crassiu- 

 scula, anguste lineari, decomposito-dichotoma flabellato-fastigiata, 

 segmentis patentibus (margine nudis), terminalibus conformibus 

 obtusiusculis; cystocarpiis segmenta superiora occupantibus. 



Hab. ad oras Nov;e Hollandicie occidentiilis et australis. — 

 Frons circiter 6-7 cm. longa, inferne teretiuscula, superne leviter 

 compressa, juxta radicem longius breviusve indivisa, superne (5- 

 7-ties) repetite dichotoma aut aliquando trichotoma, ;ixillis acutiu- 

 sculis segmentis ubique sub;i3qualil)us, 2,'2 mm. fere latis, termina- 

 libus obtusis. Segmenta superiora quasi punctata, cystocarpiis im- 

 mersis, 2-3 adproximatis, quasi puncta proeminentibus. Color pur- 

 pureus. Substantia vix cartilaginea, sed tenax et quodammodo 

 flexilis. 



2. Prionitis chondrophylla (I3ory?) J. Ag. Sp. II, p. 187, Epicr. p. 187, 2497 

 Sphcerococcus chondrophyllus Bory Voyage Coquille n. 63 (non 



1()0 



