NiToni VI.I-K.K. 2!) 



Procter different ias, quas in ipsa structura sort et gene- 

 rationis modo ojusdem obvenientes descvibere conatus sum, 

 alias adessr turn quoad .sv7//.s flirrrxof: in fronde, tiun quoin! 

 immn-inii. quo proveniant iiuiu- in deHnita quadam partr 

 fronilis an I: singuli, aut pauci. aut plurimi; turn quoad for- 

 mutn /yW/fx tori, (juani in diyersis Speciebus diversam ob- 

 venire' posse constat, turn denique quoad dispositiones divrrsas 

 (|uas in nonnullis speciebus j>ro])rias assumerc teinlunt, id 

 inquirenti facilius pateat. Ejusmodi diversitates charaoteres 

 sistere t} r pis minoribus diversis forsan facilius quispiam con- 

 jiceret; et ejusinodi fuisse characteribua suadentibus, (juibus 

 Genera (jiia-(lani propria designata putarunt systeinatici Algo- 

 logi, hodie meminisse placet. Ejusinodi Genera nominarera 

 Hymenenam, Botryoglosswm et forsan Dawsoniam). Compa- 

 ranti niilii tuin species his Generibus typicas, turn alias 

 quasdam suis Typis magis insignes, lubenter dicerem mihi 

 adparuisse certum quendain obvenire nexum inter disposi- 

 tiones diversas, quas sori in his Speciebus occupant et ip- 

 sam structurain frondis, qualem hanc accuratius observatam 

 rite intelligendam putarem. Ita inter nervos, secus longi- 

 tudinem excurrentes et dichotomas in Nit. mitltinervi soros 

 minutos et rotundatos, quoque in valleculis juga proniinula 

 separantibus semper dispositos, longas series formantes ob- 

 servavi ; in N. WHOSO, quani speciem N. multwcrri proximam 

 putavi, soros siniili fere modo dispositos, at duin sori in 

 N. iid f hie rri simplicem seriem longitudinalem in quaque 

 vallecula occupant, geminas saltim ejusinodi series in valle- 

 i-ulis N. rcitoxi observavi. In Hymenenee vero specie aut 



venire, id mm IIHSSIIIII (jtiin aflinitulis imliciiuu innjoris immifiiti con- 

 sidcriirciii. Si suri in aliis Ni1o])liyllis t'onnantiir clcnuMitis, i|ii;i' jam 

 ;in1t-:i iidsinl c|ii:isi aliuni in linoin cn-ata, lia-c VT<> ipsa dclicinnt ele- 

 nicnla in |>lant:i monostromatica ct tanu-ii snniiu ^cncrant, ipHMu ma 

 tnruin vix ali<> modn i|uain ipsu smi generationis imidn diversum; i'ere 

 assiinicndiiin vidcrdiir strnctnram suri rvolnti sistcrc cliaraclcri'in ma- 

 juris moment! quam niodnm I'i'i nialionis sori diversum. C^iiin immo 

 forsan dieere ita liceret ipso modo di verso ipio Nitophylla, strnctnra 

 t'rondis monostromatica diversa, sorum sphserosporarum <j;eneraiit, (plain 

 rnaxime probnri structuram sori evoluti sistere characterem (ieneris 

 majoris mojiieuti. 



