22 TRANS. ST. LOUIS ACAD. SCIENCE. [182 
26. P. Thunbergii, Pariat. This is P. Massoniana, Sieb. & Zucc., and 
of many authors and many gardens, but is easily distinguished by its stout- 
er, shorter leaves with parenchymatous ducts. It seems peculiar to Japan, 
though cultivated in apres whence P. Australasiaca, Steud., an origi- 
nal specimen of which I have been able to examine in Herb. Cosson. Its 
parenchymatous duct distinguish this species at once from: any other Japa- 
nese pine and place it near P. Laricio. 
27. P. contorta, a. is a little out of place here and evidently be- 
longs nearer to the next group, but it has the subterminal cones of this. 
ducts, which character distinguishes it at once from its Old World 
associates, and so do the subulate points of the female scales. The low- 
growing narrow-leaved coast form, which is found along the Pacific from 
Northern California to Alaska is the original P. contorta, Douglas (from 
cino, California); it is a regular seaside tree, an excellent screen against 
e Pacific storms and pes salt spray, just as PH alepensis is on the 
Mediterranean ; its leaves are often entirely destitute of ducts. The broader 
leaved mountain form is P. Murrayana, Murr., as Jeffrey’s original speci- 
mens prove, which come from the sierras; P. muricata, with which Parla- 
tore unites it, is very different and belongs tothe coast region; this broad- 
leaved form extends to Oregon and to the Rocky Mountains. While the 
forms of the coast and of the Rocky Mountains have very knobby, oblique, 
serotinous, and persistent cones (see p. 172), those of the sierras have occa- 
sionally more regular, less tuberculated, readily opening and deciduous 
cones, without being otherwise distinguishable (C..S. Sargent). The woo 
of this species is white and soft, and the tree is therefore often called white 
pine or spruce-pine. 
28. P. Sabiniana, Dougl. and P. Coulteri, Don (macrocarpa, Lindl.) 
cannot be confounded by those that have been able to compare both grow- 
brown; the seeds larger, 9-12 lines long, almost cylindrical, with muc 
shorter wings; those of P. Coulter’ are more slender, of a paler leather 
color, the seeds shorter, 6-8 lines long, and their wings longer. P. Sadi- 
niana makes a round-topped tree with spreading branches and looser, 
more slender and lighter foliage on glaucous branchlets; P. Coulter? is 
1 tree with rigid brown-green branches and denser, coarser 
and darker foliage. The seeds of P. eeee are or have been a most 
important cass of subsistence for the Indian 
29. usignis, Dougl., distinguished by its fresh green foliage and 
closely and strongly serrulate leaves. Cones generally thick and very ob- 
de a 
equally flat. For the synonymy I refer to Flor. Calif. 2, 127, repeating 
here only that the original P. tuderculata, or is founded on an unusu- 
