Each country in the European Union has its own definition of a forest and the European Commission has defined forestland as having at least 20% canopy closure (10% in the Mediterranean forests) and a minimum area of 0.5 ha. (1 ha. = 0.01 kmÂ²). Elsewhere, the definition of a tree can vary.
Lunula: the crescent-shaped area at the base of the human fingernail.
Absent lunula - fingernail. Absent lunula - fingernail: Introduction. Absent lunula - fingernail: Absence of the whitish half moon-shaped portion often seen at the base of the fingernail. See detailed information below for a list of 2 causes of Absent lunula - fingernail, Symptom Checker, including diseases and drug side effect causes.