You could try posting a very clear picture of them here- I know there are a few members that are brush junkies (ie Hathorcat) who may be able to help with identification..
OMG! Seriously...this may be the best description of me ever...*I think I need to change my personal text* hathorcat is a Brush Junkie
Sparkleset, honey, I know how you feel. Flower brushes are my absolute favourite - like yourself, I have a truly terrifying amount of them and easily more flower brushes than there were ponies to go with them