Pinus elliottii var. densa

Little & Dorman

J. Forest. (Washington) 50: 921, fig. 1, 2. 1952.

Common names: South Florida slash pine
Endemic
Synonyms: Pinus densa
Treatment appears in FNA Volume 2.

Seedlings with vertical growth interrupted by grass stage, stem then more thickened, fascicles much more numerous and crowded around bud, and other buds more approximate on stem. Leaves mostly in 2s, sometimes in 3s on same shoot, resin canals per leaf 3–9, hypodermis (2–) 3–4 (–5) cell-layers thick. Seed-cone base mostly rounded when open.


Habitat: Flatwoods, mostly over limestone
Elevation: 0–10m

Discussion

The name Pinus caribaea Morelet has been applied in error to P. elliottii var. densa. This variety is best distinguished by its wood, which is heavier and harder than that of typical slash pine, and by its having a grass stage comparable to that of P. palustris. This variety is not used for naval stores as is the type variety; neither is it commercially planted.

Selected References

None.

Lower Taxa

None.

"relatively thin" is not a number.

resinous +
abruptly acute +  and acuminate +
cross-keeled +
Robert Kral +
Little & Dorman +
orange;purple-brown +
persistent +
Pinus heterophylla +
dark-brown +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
spreading +  and ascending +
approximate +
silvery brown +
conspicuous +
cylindric +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
South Florida slash pine +
18 cm180 mm <br />0.18 m <br /> (20 cm200 mm <br />0.2 m <br />) +
brown;light chocolate +
9 cm90 mm <br />0.09 m <br /> (18 cm180 mm <br />0.18 m <br />) +
falling +  and maturing +
ovoid-cylindric +, ovoid +  and lanceovoid +
flattened +, rounded +  and conic +
0–10m +
sheathed +  and sessile +
rounded +, 2-3-angled +  and terete +
Flatwoods, mostly over limestone +
arranged +  and fascicles +
20 cm200 mm <br />0.2 m <br /> (23 cm230 mm <br />0.23 m <br />) +
yellow;blue-green +
straight +
persisting +
15 cm150 mm <br />0.15 m <br /> (20 cm200 mm <br />0.2 m <br />) +
ascending;spreading +
3 (?) +  and 9 (?) +
scale-like +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
rectangular +
not winged +  and 2-winged +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
J. Forest. (Washington) +
fibrous;woody +
arranged +  and overlapping +
persistent +
flattened +
pliable +  and woody +
grouped +  and solitary +
long-persistent +
oblique-tipped +
persistent +
pendent;more or less erect +
ellipsoid +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
reduced;well-defined short +
3 cm30 mm <br />0.03 m <br /> (?) +
crowded +  and fascicles +
extended +
Pinus densa +
Pinus elliottii var. densa +
Pinus elliottii +
variety +
decurrent +  and elongate +
straight +
darker brown +  and orangebrown +
depressed-pyramidal +
reduced +
0 cm0 mm <br />0 m <br /> (?) +  and 2 cm20 mm <br />0.02 m <br /> (?) +