CCXXTII. CONIFERS. 



74) 



Pine. 

 Eipe pollen (mag,). 



Pine. Seed. 



Pine. 



Seed cut vertically 



(mag.). 



Pine. 



Imaginary figure, showing" 



the suspensors and 



rudimentary embryos. 



(R. Brown.) 



Pme. 

 Germinating embryo. 

 T. canlicle ; C. coty- 

 ledons surrounding 

 the plantule. 



Fir. 



Suspensor adhering 



above to a micropylar 



vesicle, and terminated 



below by a rndi- 



mentary embryo. 



Araucctria. 

 Antheriferous sc 



Arthrota:pis: 

 Ovuliferons scale. 



Podocarpus. 

 Section of ovule. 



Sequoia. 

 Ovulif erous scale. 



Sequoia. 

 Section of ovule. 



ConifercBy which have played so -considerahle a part in all the geological epochs of our planet, are to 

 this day one of the most numerous and widely-spread families in the world. They form a class rather 

 than a family, and their trihes may be considered as so many distinct orders, themselves capable of sub- 

 division. These tribes or sub-orders are the following : — 



Tribe I. ABIETINJEJ, L.-O. Rich. 



Tk-bbs, usually tall, often gigantic, resinous, trunk conical, branches numerous, 

 most frequently whorled; or shrubs with divaricate branches ; buds naked or scaly. 

 Leaves usually persistent, stiff, narrow-linear, subulate, lanceolate or elliptic, 



