CONE-BEARERS. 67 



size; abundant in past ages of the earth, a few species 

 only now extant. The leaves are scale-like or linear; 

 cones (maturing in one A season) globular or oblong, 

 woody; seeds 2 to 6 on' each scale, narrowly winged. 

 Two classes: r 



Class A-SEMPERVIRENTES 



EVERGREEN TAXODIADS. 



Trees retaining their leaves alive during several 

 years. 



Four Genera : Sequoia , Cryptomeria, Agathis, and 

 Sciadopitis (the three last named not native to West- 

 ern America but often met with in cultivation). One 

 genus, peculiar to California: 



Seventh Genus, SEQUOIA 



CALIFORNIA REDWOODS OR BIG TREES- 



The largest and most magnificent trees known; 

 peculiarly confined to the limits of California. Cones 

 woody, globular, of nearly equal-sized scales, arranged 

 in three coils, and diverged at right angles from the 



