22 Linnean Society. [Feb. 6, 



the other genera of the same Natural Order, it is remarkable that the 

 female cone of Cycas is sessile, and that after it has arrived at ma- 

 turity its scales diverge and assume a tendency to a horizontal di- 

 rection, corresponding with that of the leaves ; after which the next 

 set of leaves rises from the centre of the cone. In other Cycadese, 

 the cone, whether male or female, is pedunculated, and the new tuft 

 of leaves appears by the side of the peduncle. 



Genus Zamia. 



Zamia furfuracea. — There are two fine old plants in the Botanic 

 Gardens at Cambridge and Chelsea, which are males, and bear cones 

 almost every year. Their stems are short and branched. In the 

 Botanic Garden at Liverpool is a female, which produced a cone in 

 1848. These three plants agree quite as well with Miquel's de- 

 scription of " Zamia muricata, var. angustifolia," as with his descrip- 

 tion of Zamia furfuracea. 



Zamia integrifolia. — A fine female plant in the Botanic Garden at 

 Cambridge produces a cone every year, and one is now appearing. 

 Five or six bulbs grow from the stem, some of them bearing leaves*. 



Genus Ceratozamia. 



Ceratozamia Mexicana. — A male plant flowered at Chatsworth in 

 1847, and another of the same sex at Kew. The cone of the last is 

 preserved in the museum. Two fine plants of this species are now 

 flowering at Kew, and there are two in the garden at Chiswick, 

 also in a flowering state. At Kew and Chiswick these plants 

 are called " Dipsacozamia." In these gardens the plants differ 

 so much in the size and form of their leaves, that they may be pre- 

 sumed to belong to some of the four new species preserved at Am- 

 sterdam, which Miquel describes in the ' Tijdschrift voor de Wetten- 

 schappen,' 1847, p. 38-43. The same observation applies to the 

 Ceratozamias in the conservatory of Mr. Loddiges at Hackney. 



* Four Zamia? of other species are now flowering at Kew. 



