Plant Lab: Gymnosperms

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11 Terms

1
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Ginkgoaceae, Ginkgo biloba (Ginkgo)

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2
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Cupressaceae, Taxodium distichum (Bald cypress)

Feathery leaves

<p><strong>Feathery leaves</strong></p>
3
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Cupressaceae, Juniperus ashei (Mountain cedar)

Scaley leaves

Ovulate cones blue-black-purple

Leaf gland without exudate

Hilum covering seed 1/3 or less its length

Plant usually several trunks from near base

Abaxial leaf glands usually roundish, conspicuously raised

Leaf margins minutely separated (NOT SMOOTH) (at microscopic level)

<p>Scaley leaves</p><p>Ovulate cones blue-black-purple</p><p>Leaf gland without exudate</p><p>Hilum covering seed 1/3 or less its length</p><p><strong>Plant usually several trunks from near base</strong></p><p><strong>Abaxial leaf glands usually roundish, conspicuously raised</strong></p><p><strong>Leaf margins minutely separated (NOT SMOOTH) (at microscopic level)</strong></p>
4
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Cupressaceae, Juniperus virginiana (Red cedar)

Scaley leaves

Ovulate cones blue-black-purple

Leaf gland without exudate

Hilum covering seed 1/3 or less its length

Plant usually 1 main trunk from base

Abaxial leaf glands elliptic-elongate, not conspicuously raised

Leaf margins entire, smooth

<p>Scaley leaves</p><p>Ovulate cones blue-black-purple</p><p>Leaf gland without exudate</p><p>Hilum covering seed 1/3 or less its length</p><p><strong>Plant usually 1 main trunk from base</strong></p><p><strong>Abaxial leaf glands elliptic-elongate, not conspicuously raised</strong></p><p><strong>Leaf margins entire, smooth</strong></p>
5
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Cupressaceae, Juniperus pinchotii (Redberry juniper)

Scaley leaves

Ovulate cones reddish-copper

Leaf gland often with white crystalline exudate

Hilum covering seed ½ length

<p>Scaley leaves</p><p><strong>Ovulate cones reddish-copper</strong></p><p><strong>Leaf gland often with white crystalline exudate</strong></p><p><strong>Hilum covering seed ½ length</strong></p>
6
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Pinaceae, Pseudotsuga menziesii (Douglas fir)

flat, soft needles that grow all around the branch,

reddish-brown, pointed buds

thick, deeply furrowed, reddish-brown bark

<p><span><span>flat, soft needles that grow all around the branch, </span></span></p><p><span><span>reddish-brown, pointed buds</span></span></p><p><span><span>thick, deeply furrowed, reddish-brown bark</span></span></p>
7
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Pinaceae, Pinus echinata (Shortleaf pine)

Needles 7-11 cm long

Usually 2 needles per bundle

Terminal buds brownish (.5-2 cm long)

Bundle sheaths (.5-1 cm long)

Bark with evident resin pockets

<p>Needles 7-11 cm long</p><p><strong>Usually 2 needles per bundle</strong></p><p>Terminal buds brownish (.5-2 cm long)</p><p><strong>Bundle sheaths (.5-1 cm long)</strong></p><p><strong>Bark with evident resin pockets</strong></p>
8
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Pinaceae, Pinus palustris (Longleaf pine)

Needles 25-25 cm long

3 needles per bundle

Terminal bunds silvery white (3-4 cm long)

Bundle shealths of new needles 25+ cm long

Seed body 1 cm long, wing 3-4 cm long

<p><strong>Needles 25-25 cm long</strong></p><p><strong>3 needles per bundle</strong></p><p><strong>Terminal bunds silvery white (3-4 cm long)</strong></p><p><strong>Bundle shealths of new needles 25+ cm long</strong></p><p>Seed body 1 cm long, wing 3-4 cm long</p>
9
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Pinaceae, Pinus lambertiana (Sugar pine)

Long cones

5 needles per group

<p>Long cones</p><p>5 needles per group</p>
10
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Pinaceae, Pinus taeda (Loblolly pine)

Needles 7-11 cm long

Usually 3 needles per bundle

Terminal buds brownish (1-1.2cm long)

Bundle sheath less that 2 cm long

Seed with body 5-7 mm long, wing 12-20 mm long

Bark without resin pockets

Needles yellow-grayish-green, not clossy

Seed cones sessile, mostly dull brown, surface of exposed thickened apical portion of seed cone dull

Pollen cones yellow-brown (2-4 cm long)

Mature seed cones 16-18 cm long

<p>Needles 7-11 cm long</p><p><strong>Usually 3 needles per bundle</strong></p><p>Terminal buds brownish (1-1.2cm long)</p><p>Bundle sheath less that 2 cm long</p><p>Seed with body 5-7 mm long, wing 12-20 mm long</p><p><strong>Bark without resin pockets</strong></p><p><strong>Needles yellow-grayish-green, not clossy</strong></p><p><strong>Seed cones sessile, mostly dull brown, surface of exposed thickened apical portion of seed cone dull</strong></p><p><strong>Pollen cones yellow-brown (2-4 cm long)</strong></p><p><strong>Mature seed cones 16-18 cm long</strong></p>
11
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Pinaceae, Abies concolor (White fir)

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