30 



Bulletin 194 



(jJraj riue. Jack Tine 



(Mich. Trees). 



1. ' Cluster of leaves, x 1. 



2. Cross-section of leaf, enlarged. 



3. Branchlet with unopened cone, x 1. 



4. Branchlet with opened cone, x 1. 



5. Cone-scale with seeds, x 1. 



