Lab exam 4 - twigs

Question 1

Beech

Answer 1

Fagaceae Fagus grandifolia

Question 2

Pale Dogwood

Answer 2

Cornaceae Cornus amomum

Question 3

Beech twig characteristics

Answer 3

terminal & lateral scaled buds are long thorn-looking spires, coming off main twig or at terminus of short stems

Question 4

Red Maple

Answer 4

Aceraceae Acer Rubrum

Question 5

Eastern Cottonwood

Answer 5

Salicaceae Populus deltoides

Question 6

Eastern Cottonwood twig characteristics

Answer 6

star-shaped pith

Question 7

Red maple twig characteristics

Answer 7

light grey bark, many round scaled buds at multiple termini, if lateral buds present held very close to the stem & very small

Question 8

Pale Dogwood twig characteristics

Answer 8

red bark, leaf scars opposite

Question 9

Silver Maple

Answer 9

Aceraceae Acer saccharinum

Question 10

Silver Maple twig characteristics

Answer 10

brown/red bark, many round scaled buds at multiple termini, if lateral buds present held very close to the stem & very small

Question 11

River Birch

Answer 11

Betulaceae Betula nigra

Question 12

River Birch twig characteristics

Answer 12

twin shingled spire terminal buds

Question 13

Glossy Buckthorn

Answer 13

Rhamnaceae Frangula alnus

Question 14

Glossy Buckthorn twig characteristics

Answer 14

miniscule/near invisible leaf scars, terminal buds very small wooly

Question 15

Black Cherry

Answer 15

Rosaceae Prunus serotina

Question 16

Pin Oak twig identification

Answer 16

grey twig w/lateral branches, many pointed termini buds, dew-claw buds

Question 17

Apple

Answer 17

Rosaceae Malus spp.

Question 18

Apple twig identification

Answer 18

spurs (thick node-like bud stalks)

Question 19

Pussy Willow

Answer 19

Salicaceae Salix discolor

Question 20

Pussy Willow twig characteristics

Answer 20

thick acorn-like (in color & shine) lateral buds, some lateral buds (especially near the top) are much smaller

Question 21

Tree of Heaven

Answer 21

Simaroubaceae Ailanthus altissima

Question 22

Tree of Heaven twig identification

Answer 22

thickest twig in collection, odor near cut, huge leaf scars, near flat round buds

Question 23

White Ash

Answer 23

Oleaceae Fraxinus americana

Question 24

White Ash twig characteristics

Answer 24

thin prehensile looking grabbing branch

Question 25

Cucumber tree

Answer 25

Magnoliaceae Magnolia acuminata

Question 26

Cucumber tree twig identification

Answer 26

red bark, white-grey/green terminal buds

Question 27

Pin Oak

Answer 27

Fagaceae Quercus palustris

Question 28

Black Cherry twig identification

Answer 28

deep red bark, grey towards the end, several branchlets, small buds very red,

Question 29

Pawpaw

Answer 29

Annonaceae Asimina triloba

Question 30

Pawpaw twig identification

Answer 30

round dark ultra wooly buds , no branches

Question 31

Black Walnut

Answer 31

Juglandaceae Juglans nigra

Question 32

Black Walnut twig identification

Answer 32

chambered pith, thick twig, wooly white buds, lateral smaller than terminal buds

Question 33

Black Oak

Answer 33

Fagaceae Quercus velutina

Question 34

Black Oak twig identification

Answer 34

white wooly multiple terminal buds, all buds approximately the same size

Question 35

Tulip Tree

Answer 35

Magnoliaceae Liriodendron tulipifera

Question 36

Tulip tree twig identification

Answer 36

very dark brown bark, round leaf scars, green smooth-looking bud

Question 37

basswood

Answer 37

Tiliaceae Tilia americana

Question 38

Basswood twig identification

Answer 38

all buds small, acorn red; similar color bark after node, lateral buds point away from stem

Question 39

Butternut

Answer 39

Juglandaceae Juglans cinerea

Question 40

Butternut twig identification

Answer 40

chambered pith, large wooly terminal bud & smaller lateral buds, many wide thin leaf scars w/ lobes pointing away from bud, u shaped bundle scars

Question 41

Slippery Elm

Answer 41

Ulmaceae Ulmus rubra

Question 42

Slippery elm twig identification

Answer 42

dark grey before node, red after node; branchlet with many buds, buds small black w/red tips

Question 43

Black Tupelo

Answer 43

Nyssaceae Nyssa sylvatica

Question 44

Black Tupelo twig identification

Answer 44

pale tan/white bark, very small buds & leaf scars

Question 45

Quaking Aspen

Answer 45

Salicaceae Populus tremuloides

Question 46

Quaking Aspen twig identification

Answer 46

grey bark w/red undertone before node, red after node, very pointy small red lateral buds, thicker stubby scaled terminal buds

Question 47

Sassafras

Answer 47

Lauraceae Sassafras albidum

Question 48

Sassafras twig identification

Answer 48

green bark, wintergreen smell & taste

Question 49

Shagbark Hickory

Answer 49

Juglandaceae Carya ovata

Question 50

Shagbark Hickory twig identification

Answer 50

brown bark w/orange lenticels, white wooly terminal bud, lateral buds get bigger towards terminal, obvious leaf scars w/many bundle scars

Question 51

Flowering dogwood

Answer 51

Cornaceae Cornus florida

Question 52

Flowering dogwood twig identification

Answer 52

stem splits in multiple branchlets, all buds terminal, some spine-like some flat round & shingle scaled

Question 53

Witch Hazel

Answer 53

Hamamelidaceae Hamamelis virginiana

Question 54

Witch Hazel twig identification

Answer 54

yellow flower strings?

Question 55

Black Locust

Answer 55

Fabaceae Robinia pseudoacaial

Question 56

Black Locust twig identification

Answer 56

thorns, brown-red new growth bark