Believed to come from a tall unidentifiable tree (among Ficus and other trees - canapy too tall and mixed to tell which trees the seeds came from). On my PC the seeds are about life size - the seed itself without the wing is between 1/2 inch and 2cm :) Help ! Matt
Those seeds are probably Scaphium scaphigerum. Check out the following links. (Sorry they are in Thai but have pics of the seeds.) http://www.it-gateways.com/charoenvej/Herb/somrong.htm http://www.phoomtai.com/Story004.htm
Many thanks again Kadai ! Certainly a Scaphium species - interesting to see the herbal/food use made of the gelatinous seed covering, I'll see what other information I can find. All the best - Matt