The name is derived from the word "ugly" refering to the it's unpleasant appearance, with rough, wrinkled, greenish-yellow rind, wrapped loosely around the orange pulpy citrus inside.
  
Loquats are used in plum wine manufacturing.
Dried leaves of loquat are used to make herbal tea.
The seeds of loquat are slightly toxic & the symptoms of intoxication are nausea, vomiting & shortness of breath.