6 PINACEAE 
E ovoid when open, p ad “appendage e a curved spine: seed a 
ong, the wing fully z3 nops A it. ]J— (SCRUB- PINE. JERS 
PIN E. POVERTY -PINE.)— Dry s e a various provinces, C Ga. to E Miss. - 
E: ~ nd S N. Y. id es dedi by its short stubby leaves and medium-sized 
uei yu rigida Mill. Tree becoming 25 m. tall, with stiff branches, the bark 
very rough, the twigs yellow: leaves in 3’ » bright- pir 6-12 cm. long, rather 
Hide sheath 10-15 mm. lon ng: cone 4—7 cm. long, ovoid when closed, globose- 
ovoid or pal eg E open, i seale- ‘appendages relatively thin, each with a 
recurved spine: seed 4—4.5 mm. long, the wing about 1.5 em. long .— (PITCH- 
PINE.) —Sterile in. usually acid soils, various oe N Ga. to Ont. and N. B. 
12. P. pungens Lamb. Tree becoming yd a haa ee er id bur = 
flaky: leaves in 2's, pepe green, 5-10 e ong, 
long, very persistent, ovoid when closed, plobos ae or dé ET mul. oi 
the scale-appendages es a each w stout ineurved spine: seed 6-7 
mm. long, the wing fully 2 em. puer Pantie. -MOUNTAIN PINE. 'TABLE-ROCK 
NE. a ed y—Rocky acid oe e nd cliffs, Piedmont to Appalachian 
ie inces, N o Pa. an tout leaves and very stout cones Min 
pr on d hod scales. Cones often e on the branehes for many year 
2. STROBUS Opiz. Trees. Leaves needle-like, 5 together, mostly with 
1 fibro-vascular bundle each. Staminate aments with involucral bracts at the 
base. Ovulate ament narrow, stalked. Cone drooping: scales leathery, with 
~ 
Li 
neither dorsal appendage nor spine.—À genus represented in eastern 
America by the following and in the Pacific States by several other species. 
1. S. Strobus (L.) Small. Tree becoming 50 
m. tall, with a relatively smooth pons ge ap- 
ae © whorled branches: leaves 5 to- 
gether, 5-10 cm. long, glaucous, Man "slender; 
sheath deciduous or fugacious: ITOW, 
slightly tapering when open, 10-20 « em. ae 
often curved; scales bos Spreading: seed 
6—7 mm. long, the wing about 2.5 em. long. 
pu Strobus L.]—(WH HITE-PINE).—Sandy 
i pU. various provin ge N Ga. to 
r—The most widely 
five- el slender leaves and long unarmed 
cones Se o a it from o Pics 
On 
(D 
z 
Uu 
ct 
H' 
5 
of Am mber 
trees, put g Scu ee by ener pum 
3. PICEA Link. Trees. Leaves solitary, ascending ur erect, narrow, 
angled or terete, leaving sterigmata when falling. Pollen-saes ni length- 
wise. Ovulate ament with inconspicuous bracts. one dr —Spr.—A 
genus of 14 species of the more northern latitudes, represented in our area only 
in the higher mountains.—SPRUCES.—Some species are timber trees, and are, 
also, an important source of paper p 
l T idu copiously pubescent: leaves over 1 mm. broad, blunt or 
1. P. rubens. 
Twigs AA glabrate or merely pubescent between the decurrent . 
sterigmata: leaves barely 1 mm. broad, acute. 2. P. australis. 
