PlNACKAK 13 



6. Irregular in shape. T. occidentalis cristata. 

 Compactly conical. T. occidentalis conica densa. 



7. Leaves tipped with white. T. occidentalis alba. 

 Leaves variegated with white. T. occidentalis argentea. 



8. Leaves green. T. occidentalis globosa. 

 Leaves; entirely yellow when young. T. occidentalis aurea. 



9. Oblong or conical. 10. 

 Round-topped. 12. 



10. Leaves green. 11. 



Leaves variegated with yellow. T. orientalis aureo-variegata. 



11. Rather oblong. (Oriental arbor vitae). T. orientalis. 

 Very conical. T. orientalis pyramidalis. 



12. Leaves green. T. orientalis Sieboldii. 

 Leaves yellow. T. orientalis aurea. 



13. Leaves rather soft. T. occidentalis ericoides. 

 Leaves stiff. T. orientalis decussata. 



THUJOPSIS. 



Evergreen shrubs or conical trees resembling Thuja, but 

 with several in&tead of 2 seeds under each scale of the cones. 



1. Foliage green. 2. 



Tip of foliage-sprays white. T. dolabrata variegata. 



2. Tall. T. dolabrata. 

 Dwarf. T. dolabrata nana. 



CUPRESSUS. Cypress. 



Evergreen trees with rather soft mostly brownish wood 

 without resin passages; opposite appressed scale-like overlap- 

 ping small persistent decurrent leaves on rather fan-like finally 

 deciduous foliage sprays; no stipule-scars; monoecious catkin- 

 or cone-like naked flowers; and .small round rather fleshy- 

 scaled cones with numerous wingless seeds under each scale. 



1. Leaves with prominent resin-blisters on the back. 2. 

 Leaves usually without evident glands, glaucous. C.arizonica. 



2. Conical: cones- scarcely 25 mm. in diameter. C. Macnabiana. 

 Narrowly fastigiate: cones often larger. C. sempervirens. 



