SPECIES LIST 5

1
SPECIES LIST 5
A? G?
FAMILIES
GENERA
Juglandaceae
Fagaceae
A
Fraxinus
Oleaceae
Tiliaceae
2
JUGLANDACEAE
KEY FEATURES
complex fruit with husk DRAW
3
JUGLANS
KEY FEATURES
4
(No Transcript)
5
CARYA
KEY FEATURES
6
Tilia sp.
7
OLEACEAE
KEY FEATURES
Variable (often with opposite leaves)
8
FRAXINUS
KEY FEATURES
9
Fraxinus
Acer
10
(No Transcript)
11
FAGACEAE
KEY FEATURE
Involucre modified bracts partially or
completely surround one or more nuts
12
FAGACEAE
KEY FEATURES
Form of

• Involucre

• Terminal bud

• Male ament

13
Castanea
KEY FEATURES.
14
Castanea
KEY FEATURES

• Involucre

15
Castanea
Broad crown
Nuts important food
16
The fungus, Cryphonectria parasitica, entered the
US on imported Asian chestnut trees. It enters
stem wounds, grows under the bark, and eventually
kills the cambium. Everything above to the
"canker" dies and stump sprouts form. In this
way major forest tree was reduced to a shrub.
300 living trees
17
Non-virulent strain of fungus
18
QUERCUS
KEY FEATURES
19
QUERCUS other
20
QUERCUS wood is widely used
21
QUERCUS
SUBGENERA
White oaks
Red oaks
22
SUBGENUS WHITE OAKS
KEY FEATURES
23
SUBGENUS RED OAKS
KEY FEATURES
24
QUERCUS
SUBGENERA
White oaks
Red oaks
25
white oaks
true white oak
chestnut oak
26
red oaks
live oaks
willow oaks
true red oaks
27
(No Transcript)
28
Susceptible species we know
29
True red oaks most susceptible
30
(No Transcript)
31
Santa Cruz May 20, 2003 County will get busy
removing diseased oaks
The county plan targets about 650 infested trees
that stand mostly along county-maintained roads.
"They are really located all over the county, but
the (San Lorenzo Valley) is where the biggest
percentage are," said Public Works John Swenson.
The tree-removal effort will be funded by a state
Department of Forestry grant. Meanwhile, the
county is crafting a re-planting effort, and is
seeking grants to pay for another round of tree
removal, he said. The county hopes to have the
trees cut and removed by the end of summer.
First discovered in California in Marin County in
1996, sudden oak death is caused by a fungus-like
organism known as Phytophora ramorum. Symptoms
include an oozing discharge, discoloration and
the presence of insects and other organisms.
32
SANTA CRUZ
33
CONTRA COSTA
34
(No Transcript)
35
Quercus suber (cork oak)
36
(No Transcript)