CONTENTS OF DIAaSlONAL VOLUME VI. 



LIST OF ILLUSTEATIONS. 



PAOE 



Plate XV. Froxdose and Früticosb Lichens. — Drawn by Errrst Heyn, - - to face 694 

 „ XVI. Eucalyptus Grove and Grass-trees in Australia. — Drawn by Ernst Heyn, 730 

 niustrations in the Text — Fig. 373 to Fig. 48a. 



THE HISTORY OF SPECIES.— Ccmfewgi. 



Page 



3. The Origin of Species. — Continued. 

 Classification of Plants proposed by the 



Editor — Continued, - - - - 657 

 4. The Distribution of Species. 

 The Distribution of Species by offshoots, - 790 



The Dispersion of Species by means of Fruits 



and Seeds, 833 



Limits of Distribution, - - . - 878 

 Plant Communities and Floras, - - - 885 



5. The Extinction of Species, - - 899 



CLASSIFICATION OF PLANTS PROPOSED BY 

 THE EDITOR. 



Phylum 1. — Myxothallophyta. 



Alliance 1. — Myxomycetes, - - - 618 



Phylum 2. — Thallophyta. 



Class I. — Schizophyta, .... 620 



Alliance 2. — Cyanophyce«, the Blue-green 

 Algoe, ------- 621 



Alliance 3. — Schizomycetes, the Bac- 

 teria, ------- 622 



Class II.— Dinoflagellata, Peridinea;, - - 625 



Alliance 4, - - - - - - 625 



Class III. — Bacillariales, - . - - 625 



Alliance 5, - - - - - . 625 



- 627 

 the Green 



- 627 



- 628 



- 641 



- 648 



- 654 



- 659 



- 661 



- 666 



Class IV. — Gamophycese, - 



Sub-class I.— Chlorophyceae, 

 Alga;, - - - - 

 Alliance B.^Protococcoideae, 

 Do. 7. — Siphoneae, - 

 Do. 8. — ConfervoidesB, 

 Do. 9. — Conjugatae, - 

 Do. 10.— Charales, - 

 Do. 11. — Phseophyce«, 

 Do. 12.-Dictyotales, 



Do. 13.— Floride», Red Sea-weeds, 



666 



Class V. — Fungi, 

 Sub-class I. — Phycomycetes, 

 Alliance 14. — Oomycetes, 

 Do. 15. — Zygomycetes, 

 Sub-class II. — Mesomycetes, 

 Alliance 16, • 

 Do. 17, - 

 Sub-class III. — Mycomycetes, 



- 663 



- 668 



- 668 



- 673 



- 674 



- 674 



- 674 



- 676 



Alliance 18, - - - - - 676 



Do. 19, 684 



Additional Group of Fungi, Lichenes, - 691 



Phylum 3. — Archegoniat.«. 



Class I.— Bryophyta, ... - 696 



Alliance 20. — Hepaticte, Liverworts, - 696 



Do. 21. — Musci, Mo.sses, - - - 699 



Class II.— Pteridophyta, Vascular Crypto- 

 gams, 704 



Alliance 22. — Filices, Ferns, - - - 705 



Do. 23. — Hydropterides, Rhizocarpa, 709 



Do. 24. — Equisetale.s, Horsetails, - 711 



Do. 25. — Lycopodiales, Club-mosses, 713 



