On the Structure and Affinities of Two New 



Conifers and A New Fungus from the Upper 



Cretaceous of Hokkaido (Yezo). 



By 

 Y. Suzuki. 



Material and Preparation of Sections. 



The study of the fossil plants, whose structure and affinities 

 are given in the following pages is based on a part of the 

 materials collected by Professor Fujii in 1906 in Hokkaido 

 (Yezo), a northern island of Japan. The fossils were contained 

 in the fragments of nodules from the Upper Cretaceous. 



The sections were made in the Botanical Institute, College 

 of Science, Imperial University of Tokyo, by the petrotome 

 specially erected in 1907, and the grinding was done with 

 carborundum powder on a rotatory grinding-disc, 45 cm. in 

 diameter, which was set up in 1909. 



Description of Plants and their Affinities. 

 Abioeaulis yezoensis. 



(Photos 7 and 2, Plate VII). 



This specimen is one of the fossils which were contained in 

 a fragment of a nodule from Ikushumbets, Hokkaido. It was 

 a piece of a longitudinal half of a stem which was 9.5 cm. long 

 / and 3 cm. in diameter. 



Cortex. In the preserved outermost part of the cortex, 

 there are 3-4 zones of periderms developed. These zones are 

 pressed closely one another, leaving here and there the primary 

 tissues of the cortex between them. These intervening cortical 

 tissues consist of mostly stone cells and few parenchymatous 

 cells. 



