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Trees are woody perennial plants, which are generally instantly recognisable
due to the long, single, main stem which divides into many branches forming
the 'head' of the tree. However, trees come in many different forms and
shapes. Trees are often used as ornamental plants in parks, gardens, etc.
to provide shade as well as for their beauty.
The trees included in the 'Pollen Calendar' section are :
| (Alnus) |
(Ulmus) |
( Oleaceae) |
| ( Fraxinus) |
(Corylus ) |
( Pinaceae) |
|
( Fagus ) |
(Ericaceae) |
(Platanus) |
| ( Betula)
|
(Carla) |
(Populus) |
|
(Castanea) |
Maple |
( Cordyline) |
|
(Cupressaceae) |
(Myrtaceae) |
( Acacia) |
(Cryptomeria japonica) |
(Moraceae ) |
( Juglans) |
(Thuja plicata) |
( Quercus )
|
( Salix ) |
Of course, this is not an exhaustive list of all the trees which produce
allergy-inducing pollens. This list merely intends to provide some basic
information on some of the main tree pollens, which are responsible
for causing seasonal allergic reactions. Further information can be obtained
by contacting your local/national pollen monitoring service. We hope to
add to this list of tree pollens and develop it over time. Any suggestions
and relevant information are very welcome.
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HON