Silver Oak
Brachylaena huillensis
A tree of about 15 meters in height. Nairobi, Kenya. November 2012.
Silver Oak isn't an oak at all, but rather a kind of sunflower. The flower
heads are small and appear in panicled clusters high up on the branch ends;
male and female flower heads occur on separate plants. The leaves are smooth
green on the top surface and velvety white on the undersurface. The gray-brown
bark is fibrous, becoming furrowed on older branches.