Leaf surface
Irregular lumps
Verrucose texture
Here is an example of a tuberculate leaf surface, bearing small rounded bumpy protuberances which interact with light quality and quantity reflected.
“Rugose surfaces can be: scaly and flaky with fragile projections and coatings; warty and bumpy with small rounded projections; point-covered with small pointed projections; or, wrinkled with undulations of repeating ridges and valleys.” – Kim D. Coder