238 GiGAETiNE^. Cystodomum. 



oblongis laxms dispositis, reticulo filorum anastomosan- 

 tium cinctis laminse stratum internum formantibus ; cel- 

 lulis corticalibus minutis granuliformibus monostromati- 



cis. Fructus Genus forma frondis Delesserieam 



revocans, structura Kallymenise aut Callophyllidi proxi- 

 mum, his formam superiorem costa prseditam constituens. 



1. E. Delesserioides (J. Ag. l. c.) fronde pedali ambitu lanceo- 

 lata, sparsim a margine deorsum oblique et costam ver- 

 sus fissa, margine minute ciholata. 

 Insul. Vancouver. Hb. Gray! 



XLVUL CySTOCLONIUM KMz. Phyc. p. 404. J. Ag. Sp. p. 

 306. 



Frons teretiuscula vage ramosa, tribus stratis constituta: rae- 

 dullari filis elongatis ramosis et anastomosantibus, arcu- 

 atim iiiter cellulas strati medii rotundatas, superficiem 

 versus minores, excurrentibus ; corticali celluhs verticah- 

 bus fere unica serie dispositis. Cystocarpia in ramuhs 

 circumcirca nodoso-intumescentibus immersa, intra peri- 

 carpium celluhs subconcentricis hinc radiatis (demum 

 ruptum?) nucleum compositum, ambitu definitum foventia; 

 nucleoh in media fronde dense congesti, fihs placentari- 

 bus tenuioribus reticulatim ambientibus invicem distincti, 

 rotundati, gemmidia pauciora rotundato-angulata majus- 

 cula sine ordine conspicuo conglobata, perisporio hyahno 

 cincta continentes. Sphcerosporcs in ramis incrassatis 

 immersse elongato-pyriformes zonatim divisse. (Kiits. 

 Phyc. tab. 58). 



Genus, quale hoc loco retinuimus, ex una parte forsan 

 Furcellari^ aftine, ex altera Mychodese analogum; ab hoc di- 

 stat strato corticaH simphciore, celluhs corticahbus vix in fila 

 verticaha evolutis, nucleohsque diversis ; gemmidia Mychodea? 

 sunt pyriformia, ad placentam reticulatim ambientem singula 

 atfixa, intra cellulam majorem excepta et quasi intra hanc 

 convergentia. In Cystoclonio lobuh ab axi radiantes, gemmi- 

 dia phira conglobata et mutua pressione plus minus auguhita 

 continent. 



