560 HYPNEACEiE. Hypnea. 



affine videretur; ramificationis norma et habitu externo ab 

 his omnibus sat diversum et fere magis Ptilocladiam referens. 

 A Harvey Catenella! proximum interea disponitur. 



1. G. piNNELLA Harv. 1. c. Pliyc. austr. tah. 93! Kiitz. tah. 



PJiyc. Vol. XVI tab. 57. 



Ad Novam Hollandiam occidentalem. 



Planta a surculo repente vix pollicaris, disticbe pinnata, quasi 

 pinnatifida, pinnis eodem modo compositis aliisque simplicibus, dimi- 

 diam lineam vix longis a latiore basi paulisper attenuatis, obtusiuscu- 

 lis constans. 



CXXXIX. Hypnea Lamour. Ess.; J. Ag. Sp. p. 438. 



Frons filiformis teretiuscula virgato-ramosissima aut plus mi- 

 nus divaricato-ramulosa; stratis fere tribus contexta; 

 strato medullari cellulis elongatis angustis, in juvenili 

 subsingulis centralibus; intermedio cellulis oblongis an- 

 guhitis; peripherico celhilis minoribus verticahbus, sub- 

 singula serie dispositis, constante. Cystocarpia intra pe- 

 ricarpium hemisplisericum clausum nucleolos plurimos, 

 in filis laxe extensis suspensos, globulosos, gemmidiis ro- 

 tundatis a puncto centrali quoquoversum radiantibus dense 

 stipatis constitutos, foventia. SphcerosporiB in ramulis evo- 

 lutse, plurim£e in soros nematheciosos collectce, oblongee, 

 zonatim divisse. (Kuts. Phycol. tah. GO fig. IV; Harv. 

 Ner. austr. tah. XLIX). 



I. ViRGAT^. Frondes steriles ccespitosae virgato-ramulos(e, ra- 

 mulis adultiorihus hasi constrictis ; sporigcrce confornics, in 

 ramulis siliquosis, hasi attenuata sterili pedicellatis, sphce- 

 rosporas fovcntes; capsuligerce divaricato-ramosissimce. 



1. H. CERAMioiDES (KHts. Sp. Alg. p. 759) csespitosa virgatim 

 ramosa, ramis filiformibus, principalibus apice elongato 

 nudo subrecurvis mox erectis, ramulis quoquoversum egre- 

 dientibus adscendenti-patentibus utrinque attenuatis, spo- 

 riferis siliquseformibus lanceolato-linearibus strictis, basi 

 attenuata sterili pediceUatis. /. Ag. Sp. p. 441. Kiits. 

 tab. Phyc. Vol. XVIII tah. 23. 

 Cap. b. Spei. 



