178 SUPPLEMENTARY NOTES. 



D. Fossil plants, or parts of plants referable to living types ; including, 1 0. Osmunda ; 

 II. Asplenium ; 14. Thuites; 18. Sp/ienopteris ; 19. PolypodioUfes ; 20. Myriophyllites ; 

 22. Algacites. 



In November 1821, Professor Martins read to the Botanical Society of Ratisbon, a paper 

 which was afterwards published in its Memoirs for 1822. This paper was entitled, " De Plantis 

 nonnullis Antediluvianis ope specierum inter tropicos mventium illmtrandis ;" in it several of the 

 species mentioned by Baron Schlotheim and Count Sternberg are referred to the orders and 

 genera of recent plants ; and the following genera are proposed : — 



1. Filicites, analogous to the Arborescent ferns. 



2. Palmacites, analogous to the Palmse. 



3. Bambusites, analogous to Bambusia, and other arborescent grasses ; these are the 



Catamites of other authors. 



4. Yuccites, analogous to the Cuciphorffi, Dracenae, Pandani, Yuccae, and Vellorise, of 



botanical writers. 



5. Gactites, analogous to the Cacti. 



6. Euphorbites, analogous to the Cereiform species of Euphorbia. 



7. Lychnophorites, analogous to Lychnophora, a genus of plants found by Martius in Brazil, 



which belongs to the order of the Compositse, and is allied to the Vernoniw of Linnseus 

 and the Pollalestw of Humboldt. 



M. Adolphe Brongniart has given the following classification of fossil plants, in his Essay 

 " Sur la Classification et la Distribution de Vegetaux Fossiles" inserted in the " Memoires du Museum 

 d'Histoire Naturelle ; " and also printed separately in quarto, Paris, 1822 : — 



STEMS. 



Class I. — Stems whose internal organization is recognisable. 



1. ExoGENiTES. — Wood formed of regular concentric layers. 



2. Endogenites. — Wood composed of insulated bundles of vessels, which are more nume- 



rous towards the circumference than at the centre. 



Class II. — Stems whose internal organization is no longer distinct, but which are characterised 

 by their external form. 



3. CuLMiTEs. — Stem jointed, smooth ; a single impression at each articulation.' 



4. Calamites. — Stem jointed, regularly striated; impressions rounded, small, numerous, 



forming a ring round each articulation, or sometimes wanting.^ 



5. Syringodendeon. — Stem channelled, not jointed ; impressions dot-like or linear, 



arranged in quincunx.' 



6. SiGiLLARiA. — Stem channelled, not jointed ; impressions in the form of disks, arranged 



in quincunx, 



1 These stems appear to M. Bi-ongniart to belong to the arborescent grasses, to Calamiis or its allied genera. 



^ M. de Candolle suggested to M. Brongniart that these stems belong to some plants of the natural order of Equisetaceae. 



' M. Brongniart considers these remains to belong to genera which are entirely extinct. 



