Yesterday, I was birdwatching in a Reserve near home. My friend who is the most superb spotter pointed out the above trees and asked me what I thought the greenery was. I wasn’t sure so he advised me it is mistletoe which is a parasite which grows on trees through birds rubbing their beaks on bark and depositing the sticky seeds which develop as seen in the photo. Out banknote collections can also spread and expand as we look to add more notes and fill gaps. Eventually, the collection can fill a few albums. Like the mistletoe it can spread out more and more.