20 



B. HOMONEMEJE. 



Fila germinantia cum systemate vegetative homogeneo (absque 

 ullis partibus discretis) similaria. Fructus prima metamorphosis. 

 Mere cellulares. 



Gonidia 

 a. prtzsentia. Color vegetabilis. b. nulla. Color metallicus. 



Cl. XIX. ALG.E. Cl. XX. FUNGI. 



'His radix, caulis, folia in unum.' 'Neque folia neque ullce eis anal- 

 Linn. Vegetativse. oga? partes virides.' Ray. Fruc- 

 tificativaB. 



1. Exogenea3,stratis thalli discre- 1. Exothalamii, sporidiis sece- 



tis: LAchenes. Aerese. dentibus. Hymenomycetes. 



2. Heterogenese, stratis thalli 2. Heterothalamii, primo nuclei- 



confusis. Amphibise. feri. 



a. autonomy, exscarpse: Bys- a nucleo in discum expanse 

 sacca. sporidiis elastice rejectis. 



Discomycetes. 



b. elementares, anocarpaa : b. nucleo incluso, cum sporidiis 

 Byssacea spuria. diffluente: Pyrcnomycetes. 



3. Endogenese, angiocarpse: Fu- 3. Endospori, angiocarpi: Gaste- 



cac.ea. Marina?, romyceles. 



4. Homogenese, subfilamentosse, 4. Homospori, sporidiis gonidiis 

 gonidiis ipsis multiplicatae s. similibus e filis discretis enati s. 

 Blastosporse : Ulvacea. Aqua- Blastospori: Hyphomycetes. 

 ticas. 



>endix: Fructificatione nulla, Appendix: Vegetatione propria 

 thalli in granula 1. frustula di- nulla, e gonidiis 1. clorophyllo 

 visione, multiplicatae: Diato- matris enati : Coniomycetes. 

 maceaz. (Phytozoa, crystallina.) (Entophytse. Exanthemata.) 

 (Series vegetativa, progressiva.) (Series fructu prcepollens, regres- 



siva.) 



As an artificial-natural system, which makes no pretence of pre- 

 senting the system of nature absolutely, but offers itself to be proved 

 and disproved by experiment, the above is proposed to botanists. 

 That they should find the last systematic conclusions of such a 

 mind as Fries useful and valuable, were to be expected, if any bot- 

 anist's conclusions are of value to others. And if any there be, 

 disposed to reject or neglect whatever does not come of their own 

 system they are certainly losers, for they shut themselves out from 

 truth. This does not belong to one, and opposite systems stand 

 upon it; and we cannot arrive at all truth but through all systems, 

 in science. And there are, moreover, two ways, in one or the other 

 of which, or in both, it may be, united, naturalists proceed. For 

 they start either simply from nature without philosophical grounds 

 or ends, and accumulate only and then accommodate facts, the 

 observers; or again, knowing that man and reason are first, and that 

 we cannot proceed but from them and with them, they begin scien- 

 tifically with what they must begin with at any rate, (differing from 

 the former, then, as mechanicians do from mechanics,) and have 

 hence a ground in the philosophy of their own being, and hence, 



App< 

 thi 



