Week 9- Pine ID

Question 1

Leaves-
Fascicles of 5
3-5 in

Cones-
Narrow oblong, curved slightly
4-8 in
unarmed terminal umbo

Answer 1

Pinaceae
Pinus strobus
eastern white pine

Question 2

Leaves-
Fascicles of 5
2-4 in
glaucous twig

Cones-
Cylindrical
10-26 in
unarmed terminal umbos

Answer 2

Pinaceae
Pinus lambertiana
sugar pine

Question 3

Leaves-
Fascicles of 5
1.5-3 in

Cones-
3-10 in
unarmed terminal umbos
yellow/orange apophysis

Answer 3

Pinaceae
Pinus flexilis
limber pine

Question 4

Leaves-
fascicles of 2
1-1.5 in
incurved

Cones-
ovoid to globose
open/airy
1-2.5 in
unarmed dorsal umbo

Answer 4

Pinaceae
Pinus edulis
pinyon

Question 5

Leaves-
fascicles of 5
1-1.5 in
white resin flecks
brush like

Cones-
ovoid to oblong
2-3 in 
dorsal umbo armed with long, fragile prickle
scales often quite resinous

Answer 5

Pinaceae
Pinus aristata
Rocky Mountain bristlecone pine

Question 6

Leaves-
fascicles of 2
4-6 in
break cleanly

Cones-
ovoid
1.5-2 in
unarmed dorsal umbos

Answer 6

Pinaceae
Pinus resinosa
red pine

Question 7

Leaves-
fascicles of 2
0.75-1.5 in
divergent/often twisted

Cones-
ovoid
1.5-2 in
often incurved with asymmetrical base
dorsal umbo with minute prickle or unarmed
serotinous

Answer 7

Pinaceae
Pinus banksiana
jack pine

Question 8

Leaves-
fascicles of 2
1.5-3 in
green-blue green 
slightly twisted

Cones-
ovoid
1-2 in
apophysis raised/pyramidal
small scarcely armed dorsal umbo

Answer 8

Pinaceae
Pinus sylvestris
Scotch pine

Question 9

Leaves-
fascicles of 2
4-6 in
do not break cleanly

Cones-
broad ovoid
2-3 in
apophysis light tan/dark brown inner scale
dorsal umbo with minute prickle
base often flattened

Answer 9

Pinaceae
Pinus nigra
Austrian pine