There is only 1 pollen allergen associated with ash pollen, and it is associated with airways.
Fra e 1 is an Ole e 1-like protein, which is a protein found in olive tree pollen. This protein has high cross-reactivity with the main allergens of other plants in the Oleaceae family. Ole e 1 is the marker allergen for diagnosing these linked allergens and they are often called “Ole e 1-like”. Most patients with ash pollen allergy are linked to this allergen.
Ash pollen season is between March and June. This varies from country to country. It is considered to have medium to high allergenicity, but is often overlooked as it’s pollen season coincides with birch trees, which are the most common cause of pollen allergies.
I have put together some more comprehensive resources at http://www.allergyresources.co.uk/Ash.php
The allergy resources page for ash pollen covers the key allergens, which allergic syndromes are linked to this allergy and other foods which are commonly cross reactive with ash pollen.
There is also regularly updated links to useful websites specifically for ash pollen allergies and the latest research papers on the topic.
If you have multiple allergies and are interested in how they are linked or want to find out more about food allergies outside the usual top 14 then you can follow me on Facebook or Twitter, where I share a food allergy card every day of the week.