PlNACEAE. 53 



11. Rather oblong. 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 instead 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 with- 

 out resin passages ; opposite appressed scale-like overlapping 

 small persistent decurrent leaves on rather fan-like finally de- 

 ciduous 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 f astigiate : cones often larger. C. sempervirens. 



CHAMAECYPARIS. White Cedar. Retinospora. 

 Evergreen shrubs or trees with ductless pale or brownish 

 soft wood without resin-passages ; opposite crowded very small 

 leaves spreading or in maturity closely appressed on rather in- 

 definitely fan-shaped finally deciduous foliage-sprays ; no stipule- 

 scars ; monoecious catkin- or cone-like naked flowers ; and small 

 subglobose cones with 2 or 3 wingless seeds under each thick- 

 tipped scale, 

 i. Leaves closely appressed. 2. 



Leaves spreading ("Retinispora"). 5. 



