AFFINITIES OF CERTAIN CRETACEOUS PLANT 
REMAINS COMMONLY REFERRED TO 
THE GENERA DAMMARA AND 
BRACHYPHYLLUM! 
ARTHUR HOLLICK AND EDWARD C. JEFFREY 
INTRODUCTION 
THIS paper is a preliminary contribution, designed to demon- 
strate the value of critical examinations of paleobotanical mate- 
rial by means of the microscope. The results obtained by such 
examinations of three kinds of Cretaceous fossil plant remains 
are described, viz.: cone scales commonly referred to the living 
genus Dammara, leafy branches commonly referred to the extinct 
Coniferous genus Brachyphyllum, whose exact botanical affinities 
have not heretofore been satisfactorily determined, and certain 
lignitic fragments found associated with the foregoing. 
The first mentioned are shown to belong not to Dammara but 
to an extinct genus, closely related to it, to which the new generic 
name Protodammara is given. The second are shown to be 
Araucarinean in their affinities and probably to represent the 
branches of the tree which bore the cones from which the scales 
of Protodammara were derived. The third are shown to be 
referable to Araucarioxylon and probably to represent the wood 
of the tree which bore the leaves of Brachyphyllum and the cones 
of Protodammara. 
ve 
* Read npg the Botanical Society of America, New Orleans meeting, 
Janu , 1906. 
Contribution from the Phanerogamic Laboratories of Harvard University. 
— No. 
oe neato from the New York Botanical Garden.— No. 79. 
189 
