c 
Cycas. DIOECIA MONANDRIA. 747 
of thirty years, to the height of ten, or twelve feet ; I mean 
the trunk, every one of which produces offsets in abundance, 
by which the plant is readily multiplied. But 1 see no rea- 
son to think it can ever be made a useful article of diet, I 
have never found the male tree. 
3. C. sphaerica. Roxb. 
Leaves pinnate, sides of the petioles armed with a short 
spine; leaflets from eighty to one hundred pair, sub-alter- 
nate, linear, spinous-pointed. Scales of the male strobile with 
long, curved, subulate points. Drupes spherical. 
This additional, charming species of Cycas was with C. 
circinalis, introduced into the Botanic garden from the Mo-~ 
luccas in 1798-9. In 1806 and the following year several of 
both male and female plants, blossomed in the month of May. 
The female of one of those ripened its seeds in January and 
February, and now, September, those seeds are beginning to 
vegetate, after having been in the ground about six months. 
The, plants of this species differ in habit but little from cir- 
cinalis ;1 will therefore only note wherein they differ from 
each other. 
Trunk of both the male and female trees, are hitherto, in 
- this species from thirty-four to fifty-four inches in circumfer- 
ence; it is therefore thicker than circinalis, in other respects 
they are alike. | Leaves, in this species they are smaller, the 
petioles longer and more armed, and the leaflets more numer- 
ous, viz. from eighty to one hundred, sub-alternate pairs, In 
circinalis they are from fifty to sixty, narrower, and straighter, 
Mats. In this the strobile, or cone, has the same appearance ofa 
pine-apple, as it has also in the other, but the scales taper from 
the middle, into very long, incurved, subulate points; whereasin 
circinalis they are almost truncated, with a point more or less 
long, rising nearly at right angles, from the exterior upper 
angle, Anthers the same in both. About the time the cone, or 
flower, begins to decay, it is, as in circinalis forced to one side 
by the annual tuft of foliage bursting from the crown of the 
4P2 
