308 



Cockerell: Fossil plants from Florissant 



the terminal leaflet of a species of Sambucus, but careful compar- 

 isons showed that the venation and shape of base were rather those 

 of Salix than Sambucus. From Amygdalus gracilis Lesq. the leaf 

 is known, not only by the venation, but also by the comparatively 

 parallel sides ; thus the width in the middle being 23 mm., the 

 widths at intervals of 10 mm. toward the apex are 23 mm., 21 



mm., 17 mm., 14 mm., 9 mm. 



Florissant ; railroad cut east of Florissant station (Henderson 



& Ramaley). ; 



Myrica Hendersoni sp. nov. 



Represented by a twig bearing six leaves, which as preserved 

 are light red, the twig being darker red. There is no resemblance 

 to the numerous species of Myrica described from Florissant, but, 



Fig. I. Myrica Hendersoni Cockerell. 



on the contrary, a close resemblance to the living M. cenfera and 

 M. Gale. At first sight, the leaves seem to be entire, and the plant 

 looks like a Salix closely allied to 5. myrtilloides ; on close in- 

 spection, however, the apiqal halves of the larger leaves are seen 

 to be sparingly dentate, irregularly and sharply, not at all in the 

 manner of a Salix, but entirely as in Myrica cerifera. As com- 

 pared with M. cerifera, the petioles are much shorter (not much 



