2 
PINETUM BRITANNICUM. 
o 
Fig. 5 - 
Fig. 2. 
Fig. 3 - 
Fig. 4 a. Fig. 6. 
Male Catkins. 
Fig. 
pa< 5 t, and crowded, ovato-lanceolate, acute. There is no gland at the back of the leaf as in the Cypress ; 
but along each side are a number of stomata irregularly scattered. Male catkins [figs. 4 a and 4 b natural 
size, and 5 and 6 magnified], in structure the same as those of Sequoia sempervirens , 
but smaller and narrower, pedunculated, subglobose, sin¬ 
gle, at the extremity of the branchlets ; the peduncle 
slight, placed in the centre of a sort of involucre com¬ 
posed of peltate scales spirally arranged, the inner of 
which are largest, and have a membraneous margin : 
stamens pedicellate, and the anthers, three or four in 
number, globose, sessile, and borne on the inner lower 
margin of the scale [figs. 7, 8, and 9]. The microscopic 
structure of the scale is seen in fig. 10, which shews that 
it is petaloid, adding probability to the idea that the 
scale is the perianth of the male flower. The pollen is 
variable in shape [figs. 11, 12, 13, and 14]. The scales 
are larger than those of Sequoia sempervirens , and less 
jagged on the margins ; the stamens smaller. The scale of the female flower is at first similar to the male 
scale, but rapidly increases in size, and assumes the form shewn in figs. 15, 16, 17, and 18. A claret- 
coloured exudation forms between 
the scales, simulating a membrane. 
Cones, from one to two inches long 
by one and three-quarter inches in 
diameter at the widest part [fig. 19], 
ovate, obtuse, ligneous, composed of 
a central axis of a stoutish ovato-cy- 
lindrical form, bearing a number of 
rather large, thick, spreading, stipi- 
tate ligneous scales, growing like 
branches out of the axis. Fig. 15 
represents the young cone magnified, and figs. 16 and 17 the outer and inner side of the scale, and fig. 18 
a side view. The cone at a more advanced age is shewn in fig. 19, and the outer, inner, and side view of its 
scale in figs. 20, 21, and 22. 
The cone is thick, and its core 
is a continuation of the solid 
wood of the axis of the tree, 
as shewn in fig. 23, which is 
copied from a sedtion of the en¬ 
tire cone. Fig. 24 shews the 
skeleton core of a single scale 
at that stage. The apex of the 
scale is dilated, convex, wrin¬ 
kled, transversely rhomboidal, with a transverse elevated ridge 
or keel, and in the middle a depression, from the centre of 
which springs a setaceous umbo. Beneath each scale are 
lodged a variable number of seeds (from 3 to 7)5 fFfl compressed, cnculai, about a line in length, surrounded 
by pergaminous wings, which are widest on the sides. The seed is represented in fig. 25^; 25/; is a side 
view of it. They are arranged in rows, some lying over the others, as shewn in figs. 21 and 22 ; and 
attached, 
Fig. 7. 
Fig. 8. 
Male Flowers. 
Fig. 9. 
Fig. 10. 
Microscopic Structure of Male Scale. 
Fig. II. 
Fig. 12. 
Fig- 13 - 
Fig. 14. 
Pollen. 
Fig- iS- 
Female Flower. 
Fig. 16. Fig. 17. 
Scales of Young Cone. 
