498 DELESSERiEiE. ' GrinnelUa. 



Hyp. pygm^um Mart. Alg. Bengal. n:o 3039. 

 Del. PENiciLLATA Zanavd. Icon. adr. tab. XIII. e section. D. 

 Hypogiossi dicitur. 



CXH. GrinneLLIA Harv. Ner. Bor. Am: p. 91. Bdesserice 

 sp. Ag. CryptopJeurcB sp. Kiitz. 



Frons plana simpliiiscula costata, costa medium folioli per- 

 currente, duplici strato cellularum contexta : interiore co- 

 stam frondemque vetustam occupante, cellulis elongatis 

 ssepe pluriseriatis ; exteriore laminam initio formante co- 

 stamque investiente, cellulis rotundato-angulatis constituto. 

 Coccidia in fronde sparsa, intra pericarpium tenue liemis- 

 phsericum, demum carpostomio j)roducto urceolatum, nu- 

 cleum simplicem foventia; placenta basalis sursum fila 

 gemmidiifera articulata invicem libera, in articulis ter- 

 minalibus gemmidia obovata foventia, emittens. SplioB- 

 rosporm in verrucis supra frondem elevatis, rotundato- 

 verruculosis, pluribus adproximatis et soros minutos ro- 

 tundatos per frondem sparsos formantibus, provenientes, 

 in cellulis infra corticalibus evolutse, triangule divisse. 



Genus ad typum Delesserise fere formatum, evolutione 

 spbserosporarum in verrucis cellulosis supra frondem elevatis, 

 diversum. 



1. Gr. americana (Ag. Sp. Alg. p. 173) fronde simpliuscula 

 ovato-oblonga stipitata, stipite nunc ramoso in costam 

 apice evanescentem continuato^ costulis nullis, coccidiis 

 minutis in parenchymate sparsis. Deless. awericana C. 

 Ag. l. c. J. Ag. Sp. p. fiSl. Grin. amcricana Harv. Ner. 

 Bor. Americ. p. 92 tah. XXI B. Crypt. amcricana Kiit. 

 tah. Phyc. Vol. XVI tah. 30. 



Ad Americse confoederatse littora atlantica. 



J 



€X\lf. CaLOGLOSSA Harv. Ncr. Bor. Amcr. p. 98. (subge- 

 nus Delesserise). Belcsscrice sp. Auct. 



Frons plana dichotoma et prolifera costata, costa medium 

 folioli percurrente stratum centrale tenue continente, la- 



