Properties and Uses.—The timber of this species is said by Dr. Newberry to be white and soft, and
not highly charged with resin, and to resemble that of P. Strohns and P. Lambertiana.
The seeds are edible, but smaller than those of other Nut Pines.
Culture.—There are few specimens in Britain. As might be expected, none of them were touched
by the severe winter of 1860-61.
PINUS ART STAT A.
ON—PINUS ARISTATA. Eiißelmnnn in Tmns. of Ac. of Sc. cf St. Louis, vol. ii. p. 205. '««J. ''""•'i- Chrou.. Oct. 30. 1875.
P- 549-
riNUS BALFOUR! AN A, VAR. ARISTATA, En^'elmann in Hot. Caltfonun. ii. p- 125-
—Cmcs and Leaves.—Knselmann, !oc. cit.. tnb, 5 and 6.
Specific Characters.—V\xms modica altitudinc ; foliis dense conj^^estis (piinis .ibbreviatis, viz, iincialibiis,
intc^ris rigidis acutiiisculis curvatis ex axillis perularuni per plures annos perslstcntium ; amentis inascuhs
ovatis involucro 4 phyllo munitis in axilla bractea; ovata; acuminata; persistentis stijiitatis; antherarum,
crista ad umboncm parvulum singiilum vel binos rediicta; amentis femineis crectis hcrbacco-cchinatis atro
purpurcis; strobilis ovatis (24-44") borl^ontalibus violaceo-fiiscis, sqiiamarum elongato-cimeatarum aixiphysi
rhombea pannn timiescente transverse acute carinata parte superiori augustiori medio in iimbone aristata ;
seminibiis breviter alatis ala ipsa olilitjue obovata diiplo minoribus concoloribus.
Habitat montilxis rupestribus super culmina altioni ct nivosa circa " Pike's Peak," Colorado.
A tree reaching in slieltered situations 40 or 30 feet high and i or 2 feet in diameter; but on
more exposed and lofty places only a stunted bush. The bark is thin and scaly, even in older trees not
more than three or four lines thick, of a light greyish-brown colour: that of younger branches smooth, with
many large vesicles containing a clear fluid lialsam, which remains l)ctwcen the layers of the old bark.
Branches spreading, very oftcn many of them twisted, stunted, or dead; the larger branches and the stem
it.self frequently coverc<l with voung branches or shoots, which .seem to keep life in the old trunk. The
branchlets are thickly set and closely covered with fasciclcs of leaves, the sheaths, which are very short and
broad (varying from one-half to one line in length), with somewhat loose and ragged light-brown oval
acuminate scales, standing like short cups, with the edges turned over: these remaining longer than the
leaves themselves, cover the branches with their rough, blackish remains. The leaves, five in each sheath,
are light green on l)oth sides, the stomata not vcr>' perceptibly distinguished by white efflorescence, mostly
with numerous exudations of white resin, usually curved upwards, entire on the edges and keel, abruptly
acutish, stouter in fruit-bearing branches, more slender in such trees as produce principally male flowers, in
veiy robust specimens il and rarely e\en ij, usually about i inch long; on sterile branches straight and
horizontal, " giving the branches the appearance of so many little brushes," with fnmi one to three longitudinal
grooves, but no rows of stomata, along the back of the leaf, usually three grooves at the base, the
two outer of which soon disappear, and with some very irregular rows of stomata
on the other two sides of the leaf, usually from three to five, the rows being very
fine cut and narrow, die line being occasionally interrupted, and when a greater
number of rows than three are pre.sent it seems to be by two very close together
being substituted for a space for a single line (fig. i). The sheaths consist of seven
to eight oblong scalcs with fringed margins, ad])ressed and forming a sheath 3 to 4
lines long on the young leaf, soon spreading and scpiarrosu, falling off in the second
or third year. Th
ening cells; but in
Many lanceolate a
broatler bracts, bearing
r , ! s]
lucts are described by Engelmann as peripheral and surrounded by strengthxhibited
by us there was only a single canal,
ininate scales, perulre, sheathe the lower part of the young shoots; shorter and
tlieir axils the male catkins, follow next. The aments together form a very short
A branched
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