Agardh.] 



NATURAL SYSTEMS. 



xxxvii 



merely to (presumed) affinity, is carried to such a length as to diminish the value of the 

 groups ; and hence, no doubt, Agardh's method has never been adopted, notwithstand- 

 ing its merits in some respects. 



He describes, in the following woi*ds, what he conceives to be the fundamental prin- 

 ciples of natural classification : — 



" Forma normalis in omnibus plantis non jeque perspicua, sed saepissime in quacum- 

 que sectione sensim magis magisquc prominet et explicatui', ita ut in quibusdam plantis 

 perfectissima appareat, et m aliis vix perspicienda. 



" Forma normalis constantior cernitur in fructificatione, h. e. in flore et fructu, quam 

 in habitu, tam quia in unum tantum finem ilia explicatur, cum organa vegetationis 

 indirecte etiam florem et fructum prseparare debent, quam etiam quia partes vegeta- 

 tionis individuum tantum servant, fructus vero formam normalem perennem tueri debet. 



" Sequitur tamcn ssepissime habitus fructificationem, ita ut plantse qu£e flore et fructu 

 non differant, habitu etiam quodam generali conveniant. Non autem semper nee neces- 

 sario. 



" Hinc systema in fructificatione nititur. 



" Ceterum observandum, quod fructus jamdudum plantam quamvis non explicitam 

 continet, et quod planta antequam flos et fructus earn coronet, non perfecta est. 



" In sectione vero ilia, quam speciem vocamus, non fructus solus characteres praebet, 

 quia in omnibus notis, praeter quod e causis accidentalibus pendeat, convenire debent 

 individua ejusdem speciei. 



"Affinitas plantarum componitur secundum nostram sententiam tam e multitudine 

 characterum quorumcumque in quibus conveniunt, quam ex eorum prsestantia et 

 prominentia. 



" Sic sufficit vel levis nota in floi'e et fructu, si multis notis habitualibus conveniunt 

 plantae ; et quo pauciores notse prsestantiorum partium communes sunt, eo pluribus 

 convenire debent in partibus minoris momentL Sic etiam quo magis prominet character 

 quidam, eo minus dilaceranda sectio, etiam si pluribus aliis notis difFerunt plantse sub ea 

 inclusee." 



1826. 



Perleb, C. J. — {Lehrhuch cler Naturgeschichte der Pflanzenreichs.) 

 See this author's Clavis, 1838. p. xlix. 



1827. DuMORTiER, B. C. — {Florula Belgica.) 

 The following is the system of this author, who does not appear to have given any 

 account of its principles. His Orders are equivalent to Alliances. His Staminacia 

 begins with Conifers and ends with Lemnads, and is the only part concerning which I 

 find any details : — 



Staminacia 



Fluidacia 



Sub-classes. Divisions. 

 rSimplitegmia 



Corticalia < Tubifloria 



' Decorticalia 



rCapsellia . 



(^Ecapsellia 

 rSoligrania 

 j Plurigrania 



Ungulifloria 



rBitegmia 

 isolitegmia . 



Orders. 

 C 1. Julitegmia 



< 2. Fructitegmia 



( 3. Thalamitegmia 

 r 4. Thalamitubia 

 \ 5. Fructitubia 

 C 6. Fructungulia 

 I 7. Calicungulia 

 (_ 8. Thalamungulia 

 r 9. Thalamifloria 



< 10. Fructifloria 

 (11. Calicifloria 

 ri2. Fructaulia 

 113. Thalamaulia 

 fl4. Ecalyptria 

 U5. Calyptria 

 /l6. Scutellinea 

 (17. Funginia 



18. Granulinia. 

 ri9. Cocculinia 

 \20. Fartinia. 



Characters of the Orders. 



Julitegmia. — Flowering scales, placed on a catkin. 

 Fructitegmia. — Floral envelope one, epigynous. 

 Thalamitegmia. — Floral envelope one, hypogjTious. 

 Thalamitubia. — Tube of a monopetalous corolla hypogynous. 

 Fructitubia. — Tube of a monopetalous corolla epigynous. 

 Fructungulia.— Claws of a polypetalous corolla epigynous. 

 Calicungulia.— Claws of a polypetalous corolla perigynous. 

 Thalamungulia.— Claws of a polypetalous corolla hypogynous. 

 Thalamifloria.- CoroUahypogynous. 

 Fructifloria. — Corolla epigynous. 

 Calicifloria.— Corolla perigynous. 

 Fructaulia. — Floral envelope one, epigynous. 

 Thalamaulia.— Floral envelope one, hypogynous. 

 C 



