PINUS PORPHYROCARPA 
Specific Character. —Strobi et monticolse simillima, differt foliis latioribus, stomatum seriebus septem 
vel octo, strobilis purpureis, apophysi corrugato vix opaco minus convexo, seminibus dorso nigro-brunneo 
maculatis. 
Habitat in Oregon et California. 
This species has hitherto been confounded with Pinus monticola. But it differs from that species in 
the following particulars. The leaves (fig. i) are broader, and are much more thickly supplied with stomata 
(fig. 2). P. monticola has usually only three or four rows of stomata, on each of the two inner sides of the 
leaf. This species has seven or eight: they are also more silvery, and give the foliage a more glaucous 
hue. The male catkins (fig. 3) and the anthers (fig. 4, a b) and female catkins (fig. 5, a, b, c ), bright 
carmine purple, scarcely differ from those of that species. The cones, however, instead of being pale 
(white at first and chesnut-coloured afterwards), are purple. The scales (fig. 6, a b) are not so convex; 
the apophysis is more corrugated, and it has not the velvety opaque appearance of P. monticola. It has 
more the appearance of P. Strobus, which has a slight lustre. The wing of the seed is more hatchet- 
Fig. 1. Fig. 2. 
b 
Magnified. Fig. 5- 
Fig. 7. 
b 
Magnified. 
Fig. 8. 
shaped (fig. 7, a b) ; and the seed itself (fig. 8, a b), instead of being concolorous, is on one side marked with 
black, while the other side, over which the wing extends, is slightly streaked as in P. monticola. 
The chief, or at least the most obvious, distinction in this species is the colour of the cone—purple 
instead of yellow or chesnut. Had it, however, differed in no other respect, we should not have recorded 
it as anything more than a variety; but as this character is accompanied with the others above mentioned, 
and the characters have been reproduced in young plants raised from the seed of this kind, we have 
thought it best to secure its recognition by describing it under a distinct name. 
[42] 
Description. 
