Monique Reed monique at
Tue Nov 3 17:22:59 EST 1998

Yes, probably more than 70 species, but for allergy purposes and 
allergy-testing purposes and pollen-identification purposes, all the oaks are 
basically the same, all the elms are basically the same, all the ashes are 
basically the same, all the spring grasses are the same, pecan is the same 
as walnut, etc., so it can be hard to count accurately.   People I know who do 
pollen identification say it is nearly impossible to ID to species, so most 
pollen counts don't differentiate.

Looking at my screening sheet, I see 38 plant aeroallergens that my allergist 
screens for.  Some are mixes (e.g. pine mix) and some are markers (e.g., if 
you test positive for Bermudagrass and Johnson grass, you are probably 
allergic to most of the others as well; positive for post oak and all the 
others are probably gonna get you.)

Good grief, this brings back memories---I thinkk they poked me with at least 
30 of them and I think I was positive to 28 or so... I must be crazy...

Monique Reed

>I agree with you.  The fact that they are wind borne means they can get up
>your nose.  But then why are there only about 70 species that cause alergic
>reactions (at least in the USA)?  Aren't there more than 70 wind-pollinated
>plant species in the USA?



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