148 



CONIFERALBS (bECBNT) 



[CH. 



in L. Doniana the whorled arrangement is less obvious. There is a large 

 canal below the midrib of the leaf as in Thuya and Gupressus. The cones 

 (4 — 6 valves) are longer and relatively narrower than in Thuya; seeds nn- 



FiG. 700. A, Young plant of Libocedrus decurrens ; c, cotyledons ; pr, primordial 

 leaves; tr, transitional leaves. B, Branch with adult {ad) foUage. (After 

 Rendle, from Veitch. ) 



equally winged. Juniperus. The polymorphism of the shoots is especially 

 striking ; the leaves, 2 — 3 in each whorl, being small and appressed, spinous 

 and spreading, or flat and linear. The very narrow leaves of J. Sahina 



