NR 220 Forestry Plant Identification

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This is the list of trees and shrubs that NR220 students have know for the 2023 Session 3 Forestry part of the class

Science

Last updated 2:07 PM on 8/1/23
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42 Terms

1
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Abies lasiocarpa
\- Needle single, flat in cross-section

\- Twigs not roughened with sterigmata

\- Cones erect

\- Needle same width where it attaches to stem as in the middle

\- Needles attach like suction cups (circular leaf scar)
\- Needle single, flat in cross-section \- Twigs not roughened with sterigmata \- Cones erect \- Needle same width where it attaches to stem as in the middle \- Needles attach like suction cups (circular leaf scar)
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Alnus tenuifolia
\- Strobili with persistent woody bracts

\- Leaves strongly doubly serrate

\- Smooth stems and bark
\- Strobili with persistent woody bracts \- Leaves strongly doubly serrate \- Smooth stems and bark
3
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Betula occidentalis
\- Leaves irregularly serrate

\- Rough twigs and bark

\- Riparian
\- Leaves irregularly serrate \- Rough twigs and bark \- Riparian
4
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Juniperus scopulorum
\- Needles scale-like, appressed, opposite, four ranked

\- Small tree

\- Berry-like cone
\- Needles scale-like, appressed, opposite, four ranked \- Small tree \- Berry-like cone
5
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Picea engelmannii
\- Needle single, 4 angled in cross section, not sharp to touch.

\- Sterigmata present

- Old bark cinnamon-orange, thin and scaly

\- Cones less than 6 cm long

\- Twigs with "peach fuzz" (hairy)
\- Needle single, 4 angled in cross section, not sharp to touch. \- Sterigmata present - Old bark cinnamon-orange, thin and scaly \- Cones less than 6 cm long \- Twigs with "peach fuzz" (hairy)
6
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Picea pungens
\- Needles 4 angled in cross section, sharp to touch

\- Sterigmata present

\- Old bark grayish, longitudinal ridges

\- Cones greater than 6 cm long

\- Twigs glabrous
\- Needles 4 angled in cross section, sharp to touch \- Sterigmata present \- Old bark grayish, longitudinal ridges \- Cones greater than 6 cm long \- Twigs glabrous
7
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Pinus contorta
\- Needles 3-7 cm, in fascicles of 2

\- Old bark thin and scaly

\- Some closed cones (serotinous), persistent in tree

\- Small cones
\- Needles 3-7 cm, in fascicles of 2 \- Old bark thin and scaly \- Some closed cones (serotinous), persistent in tree \- Small cones
8
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Pinus flexilis
\- Needles in fascicles of 5

\- Stems very limber

\- Needles clustered at tip

\- Cones resinous with thick scales
\- Needles in fascicles of 5 \- Stems very limber \- Needles clustered at tip \- Cones resinous with thick scales
9
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Pinus ponderosa
\- Needles usually longer than 7 cm, in fascicles of 2 or 3

\- Old bark thick with deep furrows, smells like cream soda

\- Cones open, falling from tree, armed with a sharp prickle
\- Needles usually longer than 7 cm, in fascicles of 2 or 3 \- Old bark thick with deep furrows, smells like cream soda \- Cones open, falling from tree, armed with a sharp prickle
10
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Populus angustifolia
\- Leaves lanceolate

\- Buds terminal with overlapping scales

\- Catkins drooping
\- Leaves lanceolate \- Buds terminal with overlapping scales \- Catkins drooping
11
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Populus tremuloides
\- Petiole flattened perpendicular to the plane of the leaf

\- Leaves nearly circular

\- Buds with overlapping scales

\- Catkins drooping
\- Petiole flattened perpendicular to the plane of the leaf \- Leaves nearly circular \- Buds with overlapping scales \- Catkins drooping
12
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Prunus virginiana
\- Simple leaves, serrate margins with teeth pointing toward the tip of the leaf

\- Two glands at base of petiole
\- Simple leaves, serrate margins with teeth pointing toward the tip of the leaf \- Two glands at base of petiole
13
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Pseudotsuga menziesii
\- Needles with a petiole-like constriction at base

\- Cones with large, three-pointed, exerted bract

\- Buds dark reddish brown, pointed
\- Needles with a petiole-like constriction at base \- Cones with large, three-pointed, exerted bract \- Buds dark reddish brown, pointed
14
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Acer glabrum
\- Opposite, simple, leaves tridentate, palmately lobed and veined

\- Fruit a winged sumara

\- Twigs red
\- Opposite, simple, leaves tridentate, palmately lobed and veined \- Fruit a winged sumara \- Twigs red
15
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Amelanchier alnifolia
\- Leaves simple, alternate, blunt at tip with few serrations

\- Base of leaf rounded with no serrations
\- Leaves simple, alternate, blunt at tip with few serrations \- Base of leaf rounded with no serrations
16
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Arctostaphylos uva-ursi
\- Simple leaves

\- Low, trailing plant

\- Fruit a berry

\- Evergreen
\- Simple leaves \- Low, trailing plant \- Fruit a berry \- Evergreen
17
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Artemisia frigida
\- Fine, soft leaves deeply lobed with each lobe repeatedly dissected.

\- Smells like sagebrush

- Grayish-green color

\- Half shrub

\- Increaser species
\- Fine, soft leaves deeply lobed with each lobe repeatedly dissected. \- Smells like sagebrush - Grayish-green color \- Half shrub \- Increaser species
18
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Artemisia tridentata
\- Leaves simple, tridentate and fuzzy

\- Sage odor

\- Silvery
\- Leaves simple, tridentate and fuzzy \- Sage odor \- Silvery
19
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Betula glandulosa
\- Leaves almost round, dime-sized

\- Leaves crenate-serrate

\- Rough bark
\- Leaves almost round, dime-sized \- Leaves crenate-serrate \- Rough bark
20
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Ceanothus velutinus
\- Leaves simple

\- Leaves evergreen, waxy

\- Leaves with 3 very prominent veins
\- Leaves simple \- Leaves evergreen, waxy \- Leaves with 3 very prominent veins
21
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Cercocarpus montanus
\- Simple, alternate leaves, serrate at the tip

\- Plumose tailed achene type fruit

\- Base of leaf wedge-shaped with no serrations
\- Simple, alternate leaves, serrate at the tip \- Plumose tailed achene type fruit \- Base of leaf wedge-shaped with no serrations
22
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Chrysothamnus sp.
\- Leaves simple, narrowly linear

\- Racemes of small yellow flowers
\- Leaves simple, narrowly linear \- Racemes of small yellow flowers
23
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Clematis sp.
\- Pinnately compound opposite leaves

\- Trailing or climbing vines
\- Pinnately compound opposite leaves \- Trailing or climbing vines
24
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Cornus stolonifera
\- Leaves opposite, simple

\- Old stems red

\- Flowers in terminal clusters

\- Strong arcuate venation
\- Leaves opposite, simple \- Old stems red \- Flowers in terminal clusters \- Strong arcuate venation
25
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Jamesia americana
\- Opposite, simple leaves, tomentose below (velvety leaves)

\- Small shrub with peeling bark

\- Terminal flowers clusters
\- Opposite, simple leaves, tomentose below (velvety leaves) \- Small shrub with peeling bark \- Terminal flowers clusters
26
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Juniperus communis
\- Needles awl-shaped, in whorls of three, sharp

\- White lines on underside of leaves

\- Low shrub

\- Berry-like cone
\- Needles awl-shaped, in whorls of three, sharp \- White lines on underside of leaves \- Low shrub \- Berry-like cone
27
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Lonicera involucrata
\- Opposite, simple leaves with ciliate margins

\- Fruits paired

\- Flowers yellow

\- Weak arcuate venation

\- Stems square and hairy
\- Opposite, simple leaves with ciliate margins \- Fruits paired \- Flowers yellow \- Weak arcuate venation \- Stems square and hairy
28
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Mahonia repens
\- Evergreen

\- Pinnately compound leaves, 3-7 leaflets, spiny margins on leaves

\- Looks like holly
\- Evergreen \- Pinnately compound leaves, 3-7 leaflets, spiny margins on leaves \- Looks like holly
29
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Physocarpus monogynus
\- Leaves simple, alternate

\- Flowers small, in terminal clusters, white

\- Fruit not a berry

\- Bark very shreddy, striated

\- Leaves palmately lobed and veined

\- Long terminal lobe
\- Leaves simple, alternate \- Flowers small, in terminal clusters, white \- Fruit not a berry \- Bark very shreddy, striated \- Leaves palmately lobed and veined \- Long terminal lobe
30
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Potentilla fruticosa
\- Leaves compound, 5-7 leaflets, margin entire

\- Flowers yellow

\- Shreddy bark

\- More recent authors refer to this species as Pentaphylloides floribunda
\- Leaves compound, 5-7 leaflets, margin entire \- Flowers yellow \- Shreddy bark \- More recent authors refer to this species as Pentaphylloides floribunda
31
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Purshia tridentata
\- Simple leaves, alternate

\- Tridentate leaf tips

- Crusted leaves smell like "dirty socks"
\- Simple leaves, alternate \- Tridentate leaf tips - Crusted leaves smell like "dirty socks"
32
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Rhus trilobata
\- Trifoliate leaves, each leaflet three lobed

\- Fruit red

\- Low shrub

\- Strong odor when crushed
\- Trifoliate leaves, each leaflet three lobed \- Fruit red \- Low shrub \- Strong odor when crushed
33
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Ribes cereum
\- Leaves simple, alternate

\- Small shrub, no prickles

\- Leaves with pleasant odor

\- Palmately lobed and veined leaves

\- Tubular, pink, pendant flowers

\- Fruit a berry
\- Leaves simple, alternate \- Small shrub, no prickles \- Leaves with pleasant odor \- Palmately lobed and veined leaves \- Tubular, pink, pendant flowers \- Fruit a berry
34
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Ribes inerme
\- Stems with prickles

\- Leaves simple, alternate

\- Flowers in clusters of 2-3, pendant

\- Leaves palmately lobed and veined

\- Fruit a berry
\- Stems with prickles \- Leaves simple, alternate \- Flowers in clusters of 2-3, pendant \- Leaves palmately lobed and veined \- Fruit a berry
35
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Rosa sp.
\- Stems with prickles \n - Pinnately compound leaves, leaflets 3-7, terminal one about same as lateral, serrate \n - Stipules conspicuous, adnate to petiole
\- Stems with prickles \n - Pinnately compound leaves, leaflets 3-7, terminal one about same as lateral, serrate \n - Stipules conspicuous, adnate to petiole
36
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Rubus deliciosus
\- Stems without prickles, bark shreds in a single layer

\- Leaves simple, alternate, palmately lobed

\- Flowers white, single, large

\- Fruit a berry

\- Leaves soft and “spongy”
\- Stems without prickles, bark shreds in a single layer \- Leaves simple, alternate, palmately lobed \- Flowers white, single, large \- Fruit a berry \- Leaves soft and “spongy”
37
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Rubus strigosus
\- Stems with prickles

\- Pinnately compound leaves, leaflets 3 (5-7), terminal one larger than others

\- Adnate stipules like rabbit ears
\- Stems with prickles \- Pinnately compound leaves, leaflets 3 (5-7), terminal one larger than others \- Adnate stipules like rabbit ears
38
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Salix sp.
\- Buds with single cap-like scale, lateral

\- Catkins erect

\- Usually riparian
\- Buds with single cap-like scale, lateral \- Catkins erect \- Usually riparian
39
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Shepherdia canadensis
\- Opposite simple leaves

\- Rusty scales on the underside of leaves

\- Fruit a red berry
\- Opposite simple leaves \- Rusty scales on the underside of leaves \- Fruit a red berry
40
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Symphoricarpos albus
\- Opposite, simple leaves

\- Small, soft leaves

\- Flowers white
\- Opposite, simple leaves \- Small, soft leaves \- Flowers white
41
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Vaccinium sp.
Low shrub with green leaves and stems

\- Simple leaves

\- Deciduous

\- Blueberry

\- Restricted, for the most part, to Spruce-Fir community
Low shrub with green leaves and stems \- Simple leaves \- Deciduous \- Blueberry \- Restricted, for the most part, to Spruce-Fir community
42
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Dryas octopetala
\- Leaves alternate, simple

\- Flowers solitary on naked peduncle

\- Leaf margins strongly wavy and curled down toward the underside of the leaf

\- Petals white, eight

\- Alpine plant
\- Leaves alternate, simple \- Flowers solitary on naked peduncle \- Leaf margins strongly wavy and curled down toward the underside of the leaf \- Petals white, eight \- Alpine plant