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PLSC 330 > Quiz 3 > Flashcards

Quiz 3 Flashcards

1
Q

Prunus

A

Cherry, Mayday, etc

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2
Q

Prunus virginiana

A

Chokecherry- seldom planted as ornamental

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3
Q

Prunus virginiana ‘Schubert’

A

Schubert chokecherry

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4
Q

Schubert chokecherry- general

A

small tree/large shrub depending on how it is pruned
leaves emerge green then turn purple in early summer

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5
Q

Schubert chokecherry bud

A

Alternate bud formation
multiple overlapping scales
large buds
acuminate tip
numerous white lenticels
reddish-brown stems

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6
Q

Schubert chokecherry- leaves

A

obovate leaf (wider in the top half) to broadly elliptical
acute to apiculate leaf tip
acute to rounded leaf base
finely serrate leaf margin
big variation in leaf shape, tip, base
may have glandular petioles

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7
Q

Schubert chokecherry- flowers

A

8-15 cm raceme with many white flowers; individual flowers smaller than Mayday

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8
Q

Schubert chokecherry- fruit

A

fruit dark red/purple drupe
hard stone inside

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9
Q

Prunus virginiana ‘xanthocarpa’

A

yellow fruit chokecherry

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10
Q

Chokecherry bark

A

twigs reddish-brown
turning smooth gray, turning brown with age

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11
Q

Contarinia virginianae

A

Chokecherry gall midge

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12
Q

Chokecherry- autumn colour

A

autumn colouration yellow to red

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13
Q

Schubert chokecherry- autumn colour

A

red; chokecherry can be yellow

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14
Q

Prunus virginiana - cultivars

A

‘mini’; ‘midi’; ‘copper’; ‘midnight’

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15
Q

Apiosporina morbosa

A

Black knot of cherry

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16
Q

Prunus padus var. commutata

A

Mayday tree

17
Q

Mayday tree- general

A

1 trunk from ground breaking into boughs shortly above ground
trunks are much wider than chokecherry
tendency to sucker/offshoot close to trunk

18
Q

Mayday tree- leaves

A

elliptic to obovate or oblong-ovate
rounded to acute/sub-cordate base
finely serrate
petioles most commonly glandular

19
Q

Mayday tree- flowers

A

flowers larger; more showy; very fragrant

20
Q

Mayday tree- fruit

A

smaller than chokecherry
often fewer in number
stone is often striated unlike chokecherry
mostly bitter

21
Q

Mayday tree- bark

A

can be single trunk or multi-trunked
trunks often gray-brown

22
Q

Prunus maackii

A

Amur cherry
Amur chokecherry

23
Q

Amur cherry- general

A

mainly grown for peeling bronze bark/outstanding winter colouration
new cultivars on market with outstanding ornamental value and/or unique shape (columnar)
round topped
med-high headed
ascending branches
medium sized tree
single trunked or multi-trunked
new growth is often quite tomentose (hairy)
long thin stipules present

24
Q

Amur cherry- buds

A

alternate
ovoid
multiple overlapping scales
acute-acuminate tip

25
Q

Amur cherry-leaves

A

elliptic to oblong-ovate
acuminate tip
rounded base
fine serration

26
Q

Amur cherry- flowers

A

pendulous raceme
showy in mass

27
Q

Amur cherry- fruit

A

Like chokecherry but inedible
much smaller than chokecherry
often shiny, matures august; stains badly

28
Q

Amur cherry- bark

A

New bark golden to orange bronze
older bark dark bronze
with age bark can be quite blackened
large lenticels
peeling

29
Q

Amur cherry- problems

A

Offshoots from base of tree are common
sunscald often a problem
Bolting will help protect trunks from splitting
weak crotches due to ascending branch habit

30
Q

Prunus pensylvanica

A

Pincherry

31
Q

Pincherry- general

A

upright small tree/large shrub
multi-stemmed
suckering
native plant

32
Q

Pincherry- leaves

A

alternate
lanceolate- oblanceolate
acuminate tip
rounded base
serrate
leaves commonly droop

33
Q

Pincherry- growth

A

new growth commonly red/bronze
older growth quite bronzy- not peeling; conspicuous lenticels; shiny

34
Q

Pincherry- flower

A

umbel unlike panicle in chokecherry

35
Q

Pincherry- fruit

A

like a sweet cherry
sour
excellent for jelly
bright scarlet

36
Q

Rosa

A

Rose

37
Q
A

PLSC 330 (22 decks)

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