584 THE TERTIARY FLORA OF AUSTRALIA, 



branous or coriaceous, flat, convex or with recurved margins, 

 might also be used as a basis of classification. It may be seen 

 that as all these different characters pass into one another by 



almost imperceptible gradations, there might be tabulated an 

 enormously large number of combinations sufficient to include 

 most dicotyledonous leaves, provided only that digitate, palmate 

 and penniveined leaves are excluded. 



Shape — 



Entire — ovate, obtuse Q. elliptica. 



,, obovate Q. Phellos. 



,, ovate, lanceolate Q. lancifolia. 



,, ,, ,, Q. amherstiana* 



,, ,, ,, Q. fenestrata. 



broadly ovate, lanceolate Q. philippinensis. 



Serrate, regularly not deeply lanceolate Q. oxyodon. 



,, irregularly lanceolate Q. pseudococcifera. 



,, ,, ,, Q. lancifolia. 



Irregularly toothed, broadly ovate Q. alnifolia. 



,, ,, ovate... Q. suber. 



,, ,, ,, Q. coecifera. 



Coarsely toothed, lanceolate Q. castane<rfolia. 



,, ,, ovate Q. Xalapce. 



Regularly toothed, cuneate Q. Lihani. 



Coarsely sinuate-toothed, rhomboidal Q. coccinea. 



Crenate, ovate Q. Montana. 



Deeply crenate Q. Prinos. 



Irregularly lobed, rhomboidal Q. sessiliflora. 



,, ,, ,, Q. pedunculata. 



,, ,, to ovate . Q. stellata. 



Deeply sinuate, with crenate lobes Q. pubescens. 



Secondary Veins — 



More or less straight, running to margin (,). castaneafolia. 



,, Q. Lihani. 



,, Q. suber. 



,, Q. Prinos. 



,, Q. montana. 



,, Q. Xalapce. 



,, Q. pseudococcifera. 



Wavy and reaching margin Q. lancifolia. 



