18 Linnean Society. [Feb. 6, 



Miquel observes, that this species was formerly cultivated in 

 European conservatories under the name of " Zamia spinulosa," or 

 " Z . spinosissima." Both he and Lehmann assign the name of "En,' 

 cephalai'tus pungens" to an entirely diiFerent species. 



Encephalartus Caffer. — This species, which in Miquel's arrange- 

 ment immediately follows E. Altensteinii, differs from it distinctly 

 in the form of the leaves. Also in both species the form of the 

 leaves, and more especially the obliquity with which the leaflets are 

 set upon the midrib, and which increases regularly from the base 

 of the leaf to its apex, may be traced to the imbricate vernation. In 

 all Cycadeae the vernation affords important aids for distinguishing 

 both genera and species, and these characters are the more deserving 

 of attention on account of the rare occurrence of the flowers. 



The next species to Encephalartus Caffer, in Miquel's arrange- 

 ment, is E, longifolius. He however represents these two species 

 as scarcely differing except in habit. The plant in the great con- 

 servatory at Kew, named "Zamia longifolia," seems to me undistin- 

 guishable from E. Caffer. Specimens of the same may be seen at 

 Chelsea and at Chiswick, which in those gardens are called "Zamia 



any further increase of size. They were tlien full-grown, and the scales 

 appeared likely to drop from the axis in a few weeks. 



Encephalartus pungens. 



Oct. 9, 1848. Dec. 25, 1848. 



Length of cone, outside measure 18^ inches 2]iinches 



Circumference, 9 in. from top 33 — 36 — 



Circumference, 3 in. from base 33 — 37^ — 



Number of spires 15 



Number of fertile scales in one spire ... 14 or 15 

 Number of barren scales in one spire ... 8 or 9 



Perpend, diameter of a fertile scale l-j% i"ch I^'^ — 



Transverse diameter of a fertile scale ... 2 — 2^^ — 



Perpend, diameter of a barren scale ... 0^-^ — 0^'^ — 



Transverse diameter of a barren scale... 1-rtr — 1t% — 



Each spire performs one revolution. 



Encephalartus horridus. 



Oct. 9, 1848. Dec. 25, 1848. 



Length, outside measure 10 inches 14inches 



Circumference at base 14 — \7^ — 



Circumference, 3 inches from top 14 — 16 — 



Number of spires 8 



Number of scales in one spire , 14 



Perpend, diameter of one scale \^^ — l-j^^ — 



Transverse diameter of one scale ly'^ — 2 — 



Each spire performs one revolution. 



There are no apparently barren scales. 



