These are the acorns of Quercus serrata. My wife collected them despite my son was not interested in them (actually, as a subject of my daily sketches :) ). Sketched on the 14th of October, 2009.
These are acorns of chinese cork oak (Quercus variabilis). My wife collected them at a forest in my neighbourhood. Sketched on the 27th of September, 2009.
This is a cone of Metasequoia (Metasequoia glyptostroboides) tree. There are many in my neighbourhood and my son gathers the cones. I sketched one on the 21st of April, 2009.
There are so many olive trees in Jordan. This one is the one planted inside the compound of the flat I've stayed in. Since I sketched this in the sun, some of OPs melted and it was hard to handle (ex. see the black in the shadow). On the 21st of September, 2008. This date was my birthday. I never thought of spending my birthday in Jordan... :)
I have visited some mountainous area in Nagano prefecture, central Japan, and have got these fresh chestnuts. Although this summer was extraordinarily hot, it became autumn. Painted this at an inn on the 10th October, 2007.
This tillandsia (Tillandsioideae Tillandsia), one of the plants called "air plants", is the one I have bought at Expo Japan 2005. I painted this on the day I had bought, the 17th September, 2005.