Tree ID

What is the latin name for PawPaw?

Asimina triloba

What is Asimina triloba common name?

Common PawPaw

What is the latin name for American Mountain-Ash?

Sorbus americana

What is the latin name for Osage Orange?

maclura pomifera

What is the name of the two Mulberry trees found in NY and which is native?

Morus alba & Morus rubra. M. Ruba is native.

What is the latin name for American Holly?

Ilex opaca

Please name the latin name for Black Cherry

Prunos serotina

What is the latin name for Choke Cherry?

Prunus virginiana

What is the latin name for Pin Cherry?

Prunus pensylvanica

What is the latin name for Bird Cherry?

Prunus avium

What are the names of the two Apple Trees and which one is native vs grocery stores?

Malus domestica and Malus coronaria. M. domestica is found in grocery stores

What is the latin name for Black Gum/Tupelo

Nyssa sylvatica

What is the latin name for Flowering Dogwood?

Cornus florida

Latin name for the dogwood which is a good replacement of C. florida

Cornus Kousa

Latin name for Pagoda dogwood, and what makes it different than the others?

Cornus alternifolia, and its leaves are alternate

Latin name for Cornelian Cherry

Cornus mas

Latin name for Common Hackberry

Celtis occidentalis

Latin name for Hawthorn

Crataegus

Latin name for dotted hawthorn?

Crataegus punctata

Latin name for Cockspur Hawthorn

Crataegus crus-galli

Latin name for Eastern Hawthorn

Crataegus macrosperma

Latin name for Washington Hawthorn

Crataegus phaenopyrum

What is another common name for Larch?

Tamarack

Latin name for Tamarack?

Larix laricina

Latin name for Ginkgo?

Ginkgo biloba

Latin name for European Larch?

Larix decidua

Latin name for Eastern Red Cedar

Juniperus virginiana

Latin name for Eastern Hemlock

Tsuga canadensis

Latin name for Balsam Fir?

Abies balsamea

Latin name for Eastern White Pine?

Pinus strobus

Latin name for Pitch Pine?

Pinus rigida

Latin name for Red Pine?

Pinus resinosa

Latin name for Scots Pine?

Pinus sylvestris

Latin name for Virginia Pine?

Pinus virginiana

Describe the leaves of Sorbus americana?

Pinnately compound, toothed, narrow, tapering

Describe the flowers on Sorbus americana

White, showy, flat topped, panicles

Describe the fruits of Sorbus americana

Green fruits to red/orange, size of a peas

What are two look alikes to Sorbus americana, and what makes it different?

Rhus typhinia - has different flowers, not flat panicles but cone-like.

Fraxinus - opposite leaf arrangement

American Black Elderberry - opposite leaf arrangement, but similar flowers, different fruits

What is the same for all Morus? leaves, flowers, fruits and breaking twigs?

lobed/unlobed leaves, pendulous catkins, fruits considered multiple, white milky sap when broken

How do Morus trees reproduce?

Mostly dioecious, but occasionally monoecious.

How do identify M. rubra?

sandpaper-like leaves, larger leaves, underside finely hairy (feel them), thinner elongated berries, likes fertile areas and slopes

How to identify M. alba?

Shiny, smaller leaves, smooth underneath, fruit not as elongates, likes disturbed areas, invasive

Why was morus alba brought here?

sericulture - cultivate silk worms, get silk from their larva cocoons to make silk thread. M. alba is their preferred food. Didn’t thrive here.

Why is M. rubra declining?

hybridizing with M. alba and loss habitat

Where does Crataegus like to grow, and what plants family is it in?

Disturbed areas, related to roses.

Describe Crategus leaves?

alternate, or in little clusters on spurs, lobed or unlobed

What kinda fruit does Crataegus have?

red/orange pomes

What are the flowers like on Crataegus? What do they resemble?

white flowers, like Rosa multiflora

Defense mechanism of Crataegus?

thorns!

Describe leaves of Crataegus punctata

Dotted Hawthorn - unlobed, 7-9 veins pressed in, matte in color, toothed, underside somewhat hairy

Describe Crataega crus-galli (cockspur) leaves

Look like C. punctata, but GLOSSY, not impressed veins. unlobed.

Which Crataegus is most widespread?

C. crus-galli

What makes Crataegus macrosperma (Eastern) different?

smaller than others. less tiered, more upright. LOBED leaves 3-6 triangular deltate.

Describe Crataegus phaenopyrum (Washington) habit and leaves?

tree-like, single trunk, lobed, deltate, trilobed like red maple, dark/shiny paler below

Crataegus phaenoypyrum (Washington) flowers?

flowers later than others, smell terrible, white

Which Crataegus is most cultivated and used on landscapes?

Crataegus phaenopyrum

Describe lifecycle of the bark of Celtis occidentalis?

smooth as sapling, develops noticeable warts and then irregular ridges

Describe leaves of Celtis occidentalis?

tips long and tapered, toothed, trinervate=three prominent veins arise from stem, asymetrical

Fruits on Celtis occidentalis?

green to dark purple, resemble cherries, large seed inside

What is a disease that’s common for Celtis occidentalis on leaves? Explain lifecycle.

galls on leaves - look like puffs from insects and mites. overwinter in bark, spring lay eggs underside of leaves, emerge autumn

What is a disease common for Celtis occidentalis in branches? & describe it.

Witches broom - dense clusters of short thin twigs, looks like nest. Occurs when bud on branch injured/infected.

What is common for all Cornus? leaves, torn, flowers, fruit

Arcuate leaf venation= veins curve and follow leaf shape, when leaf torn=connected by fine threads, flowers in compact clusters, drupe fruits

Describe the habit of Cornus florida?

tiered layered, understory, multitrunked, shade tolerant

Describe bark of Cornus florida?

alligator skin, blocky

What does the flower bud of Cornus florida resemble?

onion shaped

What is the white your seeing on flowers of Cornus florida?

Bracts

Describe leaves of Cornus florida

ovate, entire, wavy, underside paler and finely hairy, opposite arrangement

Describe flowers of Cornus florida

green inside, white large bracts, rounded tips

Cornus florida fruits

clustered, red, shiny, oval

Describe leaves of Cornus alternifolia?

leaves appear before flowers, clustered at ends, alternate

Flowers of Cornus alternifolia

no showy bracts, clustered, white topped panicles

Fruit on Cornus alternifola

drupes, dark blue/purple (like blueberry), attached to red fruiting stalk

Is Cornus mas native?

not native, naturalized

Why is Cornus mas, Cornelian cherry if its a Dogwood?

fruit resembles cherry and edible and tasty

Which Cornus is not tolerant of shade?

Cornus mas, loves open spaces

Which is the earliest Cornus to flower?

Cornus mas, before leaves

Flowers of Cornus mas

bracts tiny, flowers small/yellow

Fruits of Cornus mas

red drupes, hang on by green stem, shaped like olive

Why do people prefer to plant Cornus kousa?

immunity to pathogens, urban tolerant

What makes bark on Cornus kousa different? What tree does it resemble?

exfoliated with gold under, like Sycamore

What are the flower buds like on Cornus kousa

flower buds pointed

Flowers on Cornus kousa?

Large white bracts, pointed

Fruits of Cornus kousa

red looks like raspberry hanging on long stalk, bumpy, compound fruit, edible.

Which two Cornus are edible?

Cornus mas and Cornus kousa

What does sylvatica mean?

of the woods

How are the branches of Nyssa sylvatica young vs old?

horizontally arranged, right angles when younger. older trees straight trunk but contorted on top.

What type of spots does Nyssa sylvatica prefer?

generalist - everywhere but never makes true stands

Is Black Gum bark distinctive?

only when its older - alligator skin like C. florida

What does Nyssa sylvatica commonly do with its bark?

balding - becomes smooth on some parts as block parts fall off

What is interesting about Nyssa sylvatica twigs?

diaphragmed pith - cut length wise and hollow inside

Describe how the leaves grow on Nyssa sylvatica?

alternate, on branches zig-zag fashion. CAN produce small spurs and leaves may appear clustered or bunched at the end of these short shoots.

Describe leaves of Nyssa sylvatica?

unique - glossy, leathery, pointed tip, obovate (upside down egg), entire margins

Where are the leaves typically found on Nyssa sylvatica?

They tend to cluster more densely toward the tips of branches,

What do the fruits of Nyssa sylvatica look like? Are they edible?

dark purple drupes, edible but sour.

Why is Nyssa sylvatica a good choice to plant?

very tolerant, wet, dry, heat.

What tree is this?

Nyssa sylvatica

What tree is this?

Cornus florida

What tree is this?

Cornus alternifolia

What tree is this?

Cornus mas

What tree is this?

Cornus kousa