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PLSC 330 > Salix- Willow > Flashcards

Salix- Willow Flashcards

1
Q

Salix

A

Willow

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2
Q

Salix trees

A

Salix pentandra
Salix alba
Salix acutifolia
Salix discolor

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3
Q

Salix pentrandra

A

Laurel- leaf willow

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4
Q

Salix alba

A

White willow

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5
Q

Salix acutifolia

A

Sharp-leaf willow

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6
Q

Salix discolor

A

Pussy willow

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7
Q

Salix Shrubs

A

Salix repens ‘argentea’
Salix salicola “polar bear”
salix exigua- coyote willow

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8
Q

Willow

A

Grows well in high moisture areas
native to low lying wet area; close to water
cattails are indicator plant that water is near soil surface
Another self-pruning’ Genus

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9
Q

Willow- dioecious

A

Female catkins- two sided capsule; releasing seed/winged fluffy seeds
male catkins- yellow/showy(ish), sometimes fluffy

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10
Q

Dioecious

A

Individual male and female

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11
Q

Willow - buds

A

Compound buds
catkins forming with leaves
Primary bud- usually reproductive
secondary and tertiary buds- typically vegetative growth

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12
Q

Extrafloral nectaries

A

nectaries outside of the floral tissue, occur near leaf blade, small bump at base of leaf
maintain pressure in plant and used for secretions

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13
Q

Laurel leaf willow

A

Most popular
multi-trunked
as wide as tall
low and round headed
used in landscaping
can get quite wide
don’t put close to roadways or sidewalks
can often form new growth on old wood- can be maintained by removing them

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14
Q

Laurel leaf willow- leaf

A

Alternate, elliptic-lanceolate acuminate tip, rounded at base
serrate margin
shiny, dark green above; almost leathery looking
no autumn colouration

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15
Q

Laurel leaf willow- buds

A

large, green, pointed towards stem

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16
Q

Salix alba ‘sericea’

A

Siberian White willow

17
Q

Salix alba ‘vitellina’

A

Golden willow

18
Q

Salix alba ‘chermesina’

A

Red stemmed willow
not as popular

19
Q

Siberian white willow

A

Popular for foliage colour, common for landscape
low-medium headed; rounded topped
can get a single trunk
less hardy than the laurel leaf
mostly multi-trunked

20
Q

Siberian white willow- leaf

A

simple, alternate, lanceolate, acuminate tip, round base
grown for intensely silver leaves
green leaves covered in white hairs
finely serrate margin

21
Q

Golden willow

A

popular for foliage colour, common for landscape here
very hardy
large
can tolerate high moisture levels
can have a weeping look due to length of new growth
big tree; wide
usually multi-trunked
younger stems quite golden

22
Q

Golden willow- leaves

A

simple alternate
lanceolate, long acuminate tip, acute base
finely serrate margins
intensely golden new growth- identifiable

23
Q

Sharp leaf willow

A

medium to large tree; low headed; large trunk
single trunk

24
Q

Sharp leaf willow- bud

A

alternate buds

25
Q

Sharp leaf willow- leaves

A

linear- elliptic- lanceolate leaves; finely serrate margins
5-10 cm long; 1.3 cm wide good indicator
leaves are slightly thinner so shape is a bit different

26
Q

Pussy willow

A

fuzzy like cats
native
shrub or tree- depending on where it is grown
not commonly used as an ornamental other than floral arrangements

27
Q

Pussy willow -leaves

A

oblong-narrowly elliptic, serrate
young leaves reddish otherwise bright green (pink reddish flush- identifier)

28
Q

Willow- pest

A

stem galls are very common to numerous native willows
either on stem or on new growth
willow pinecone gall
caused by a midge
parasitic response
larvae growing in balls

29
Q

Shrubs

A

leaves look quite different
needs good snow cover to survive winters
high water requirement

30
Q

Salix salicola “Polar Bear”

A

Ornamental shrub
white “fuzzy” leaves

31
Q

Salix exigua

A

Coyote willow/sandbar willow (native)

32
Q

Sandbar willow

A

native
found along the river; found near water
suckers profusely hence why not common in landscape
long linear leaves with very slight serrations
used when other things won’t grow
hard to manage

33
Q

Several shurb willows native to Sask

A

height to 2 m; width 1 m
tomentose leaves
opposite buds, curving towards stems
always identify them based on buds and consider where they are growing

34
Q

Other willows seen on market

A

Salix babylonica- weeping willow
dwarf weeping willow- kilmarnock willow (more manipulated for specific ornamental planting)

PLSC 330 (21 decks)

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