60 Eu-Florideae, Batrachosperme», Batrachospermura. 



Serfio TV. ViRiDiA (Sirod. Batrachosp. p. 270): Characteres ut in seetione tertia 



sed trichogynum est pedicellatum, ovoideum. 

 f, Species dioicse. 



A) Frondes viridi-CTunilefo, glaucae. 



§ Filamenta peripherica verticillorum in individuis femineis arcuata. 



B. ccerulescens 

 §§ Filamenta periplierica verticillornra in individuis feraineis recta. 



B. elegans 



B) Frondes pulchre virides aut viridi-fiavescentes. 



§ Raraelli sporiferi forrase asexualis in dimidia superiori parte ramorum 

 cnespituli inclusi. 



C^espituli viridi flavescentes, 3-4 millim. alt. B. inride 



Ccespituli saturate olivaceo-virides, 6-10 millim. alt. B. Graibussoniense 



§§ Raraelli sporiferi forraffi asexualis apices ramorum cpespituli occupantes. 

 Apices raraorum piliferi. B. testale 



Apices rainoi'um haud piliferi. B. brnziense 



II. Species monoica, 



Frondes brunneo-virides. B. virgatum 



19. Batrachospermum ccerulescens (Bory) Sirod. Batrachosp. p. 270, 93 

 t. 40, f. 1-4, t. 41, f. 1-5, t. 44, f. 6 (non Uesmaz.?), Datrachosperma 

 helminthosa Bory in Ann. du Museuni t. XII, t. 29, f. 2, Batra- 

 chosperma ca^rulescens Bory in Dict. class. II, p. 227, Batracho- 

 spermum gelatlnosum var. cmrulescens Trevis. Noinencl. p. 55. 



— Dioicum, valde mucosum, glauco-viride, 4-8 cm. altum, exsic- 

 catione saturatius coloratum, irregulariter ramosum; verticillis com- 

 pressis, contiguis ; filamentis interverticillaribus in individuo femi- 

 neo quam in antheridifero numerosioribus. 



Hah. m rivulis locis variis Gallia; (Bory, Strodot). — Status 

 asexualis sistit ca?spitulos aeque visihiles, e filis partim radican- 

 tihus partini ascendentihus, his vero fascicuhitim ramosis, compo- 

 sitos. 



20. Batrachospermum elegans Sirod. Batrachosp. p. 274, t. 44, f. 1-5. 9^ 



— Dioicum, modlce nuu-osum, glauco-viride, exsiccatione satu- 

 ratius coloratum, vix 3 cm. altit. excedens, alterne aut hinc inde 

 unihiteraliter ramosum ; verticilHs sive contiguis et doholiformi- 

 coiiipressis sive discretis (it hite spha-roideis; fihimentis interver- 

 ticillarihus gradatim totum internodium obtegentihus, elongatis, 

 ramosis. 



Hab. in fonte quodam prope « Campeneac, Morl)ihan » Galli:c (Si- 

 rodot). — Status asexualis sestit cnespitulos minutissimos, e filis 



