112 Scientific Proceedings, Royal Dublin Society. 
XIL—ON A SUPPOSED NEW SPECIES OF CERATOZAMIA, 
sy DAVID MOORE, pu.D., F.L.s. 
[Read March 18, 1878.] 
Dr. Moore exhibited three species of cycadaceous plants, all 
in fruit, one of which he believed to have been hitherto 
undescribed, and concerning which he read the following 
notes :— 
This species of Ceratozamia was brought direct to Ireland from 
Havanna, and is said to be a native of Cuba; but I cannot find 
that it has been noticed among the plants of that island. It may 
probably have been imported to Cuba from Mexico. It has been 
in the collection of plants at Glasnevin about thirty years, and 
during that time has only once previously produced cones before 
the present. The plant is a female one, and, so far as I can learn, is 
the only one to be found in British collections at the present time. 
I lately sent as much of it as could be conveyed by post, in an 
envelope, to the Director of the Imperial Botanical Garden at 
St. Petersburg, Dr. Regel, who has one of the best collections of 
Cycadaceous plants in Kurope under his management, and who, in 
1876, published a “ Revision” of the genera and species. He 
is, therefore, considered a good authority on this subject. He 
has replied to my queries, and considers the plant may be the true 
Macrozamia longifolia (Miquel), Ceratozamia longifolia (Regel), 
It is, however, very difficult to judge accurately from small pieces 
of the leaves of a plant of this sort. There is no reference given 
to any figure published of Ceratozamia longifolia, and the plant 
is not in the Kew collection. We have, therefore, only Dr. Regel’s 
doubtfully expressed opinion, and his description of that species 
in his “‘ Revision,” to guide us. In the latter it is stated of Cera- 
tozamia longifolia—* Truncus initio globosus, demum cylindricus 
flexuosus,” which does not well suit our plant, the trunk of which 
remains globose, and certainly has no inclination to become cylin- 
