" PINACEAE 5 
Elliott Engelm.]—(SLASH-PINE. SWAMP-PINE. mr d ponds, swamps, an 
low grounds, often acid, Coastal Plain, C Fla. to E La. and 8. C.—Inhabi Tune 
the jud or wet s ituations within the eae of P. i de and thriving under 
the influence of either salt or fresh water. e cones are about as long as those 
of the next preceding Pes but broader. : 
4. P. Taeda L. Tree becoming 45 m. tall, the dark bark Mapa Dr E 
rough; pr in coarse plates: leaves in 3’s, glaucous, ong: 
e 10- 13 e . long, broadly conic when closed, ovoid or c EA 
spen e seale: e id i. T little, if at all, beyond the small 
spine: see m. long, the wing abou 1. long.—(LOB LOLLY-PINE. SHORT- 
LEA P PINE. yn D-PINE. d Or M Soil d e acid, Coastal e 
and. rarely adj. provinces, Fla. to Tex., Ark., Ten and S N. J. —A fter the 
anner of a weed completely foresting abandoned alae lands. 
P. oe eee Sudw. Tree becoming 35 m. tall, ee . bark 
shallowly furrowed: leaves uc r 3?s, glaucous, 12-25 cm. long, o touter 
than in P. Ta iE one 9— qe ong, conic when closed, ds d or ovoid- 
eylindri when open, the scale- -appen dages Nun ced ue the slender 
spine: seed 5-7 mm. long, the wing 2-2.5 e —(POoN SLASH- 
re ares ee des the eoast, Ga. and S. o: — tpi reduces ve palest bark and 
the softest wood of our pines and z the most restricted range. 
P. serotina Michx. Tree becoming 25 m. tall, with many short irregular 
pande near the base, Ho bark flaky: leaves in 3 ^s, glaucous, 2 em. long, 
iu sheath about 1 . long: staminate ament 1.5—2 em. long: cone 
4—6 cm. long, ovoid or des -ovoid when closed, very broad Mes open, each 
—4 ng, t 
2 em. long.—(BLACK-PINE. POND-PINE. MARSH-PINE.)—Sandy swamps and 
RUM ponds, frequently acid, Coastal Plain, Fla. i Ala. to S N. J.—The 
ones are much shorter and thicker than in its relative 
7. P. glabra Walt. Tree becoming 40 m. tall, with a ES smooth grayish 
4 m e ; " 
i WALTER.’S-PINE. )—Hammocks, bluffs and panes Coastal Plain, 
N Fla. to E La. and S. C.—Readily distinguished by smooth bark, the 
very oe leaves, and the small nearly unarmed co 
8. P. echinata Mill. Tree up to 40 m. tall, the od ping into angular 
plates: leaves in 2’s or ag ga in 3’s, "dee ep-gre 8-12 long, slen- 
der; sheath 10—15 mm. long: e 3.5—6.5 em . long, Mus e close: ovoid 
when T3 hie appendage coe a Peng spine: seed 4—5 mm. long, the wing 
1.5-2 ong. [P. mitis Michx.]—(SHORT-LEAF PINE. ELLOW-PINE. FOX- 
TAIL- Ped wu sterile and frequently dps soils, various provinces, N Fla. to 
ex, SE Kans., Ind., and S N. Y.—Thi o anging species may be distin- 
guished from its associates by its Pec nd 
9. P. clausa (Eng elm.) Vasey. "Tree — a m. tall, the e Qaod 
smooth: leaves in 2’s, deep-green, 4-8 cm. long, very sle nder T; 8 5-7 m 
Pi 4.5-6 e 
: . long, e S 
appendage with a stout spine near middle: seed 4 mm. long, the wing 
about 1.5 e long.—( aU sonver PINE.)—Acid sand-ridges and dunes 
near the coast, and scrublan a. dj. Ala.—May be coni d by the 
numerous slender leaves and tlie E cones which are often slow to open. 
virginiana Mill. Tree becoming 36 m. tall, the bed pu cue Ro 
branches sinuous, the twigs g ndi d in 2 A ’ deep- green, 4— ong, 
rather stout; sheath 5-8 mm. lon one 5-7 em. long, ae conic ' when 
