96 CYCADOLEPIS. 



in the genus Cycadolepis such scale leaves as afford no clear proof 

 of their carpellary or antheriferous nature. As an example of such 

 a resemblance, it may be noted that some of the smaller examples 

 of the Ecclesbourne scales present a distinct agreement in shape 

 and size with the detached carpellary scales of such a form as 

 Macrozamia Dyeri. Similarly the isolated leaves of the " bulbils " l 

 of Cijcas and other genera, erroneously compared by some with 

 the inflorescences known as Bmnettites and IFilliamsonia, should 

 be included under this comprehensive genus; also the narrow 

 lanceolate-acuminate and short broad leaves of the two latter 

 genera. 



The only forms included by Saporta in Cycadolepis, e.g. C. 

 vittosa and C. hirta? are narrow leaf-like structures similar to the 

 scales of Dioon or Cycas. Fliche and Bleicher 3 have adopted 

 Saporta's name for a very imperfect fragment which seems to 

 be practically indeterminable. We may, perhaps, as a matter of 

 convenience, and to avoid the obvious danger and inexpediency 

 of instituting several more or less meaningless specific names, 

 arrange the various detached scales under two main heads, 

 basing the distinction of the two sections on the general form 

 of the scales. 



Cycadolepis. 



Scale-like leaf structures of cycadean plants, varying consider- 

 ably in form and including detached petiolar bases, bud scales, 

 etc., also isolated carpellary or antheriferous scales which exhibit 

 no trace of ovules or pollen-sacs. 



1. Cycadolepis {Dory^-Cycadolepu']. Scales of a more or 

 less linear-lanceolate form, broadest at the base and 

 tapering gradually towards the apex. 



2. C. (Eury 5 -Cycadvlepis}. Broadly oval or orbicular scales, 

 with the broadest portion frequently nearer the distal 

 than proximal end ; thick and fibrous structures. 



1 Miquel (1), p. 7, pi. ii. figs. I and J. 



2 Saporta, loc. cit. pp. 201, 202, pi. cxiv. figs. 4-6. 



3 (A.), Bull. Soc. Sci. Nancy [-J], vol. v. tigs. 9-11, p. 76. 



4 8o'pu= spear. 



5 fvpvs- broad. 



