38 



Bulletin 194 



>Yliite Spnioe 



'M /Ia 



II • - . 



^'^^. 



N M\ 



^ ^'^ V'W^N^ 



■^^ 



(Mich. Trees). 



1. Winter branclilet, x 1. 



2. Leaves, x 1. 



3. Cross-section of leaf, enlarged. 



4. Unopened cone, x 1. 



5. Partly opened cone, x 1. 



6. Cone-scale with seeds, x 1. 



