Sri Kalyani Yogasrama Samstha

Śrī Kalyāṇī Yogāśrama Saṁsthā (Pali: Siri Kalyāṇī Yogassama Santhā, Sinhala: ශ්‍රී කල්‍යාණී ‍යෝගාශ්‍රම සංස්ථාව), also known as the Galduwa Forest Tradition is an independent part of the Sri Lankan Amarapura–Rāmañña Nikāya Buddhist ordination line, with their headquarters in Galduva, Kahawa, Ambalangoda. They keep a strict standard of Vinaya (commentarial interpretation), recognised as the strictest standard of any major organisation in Sri Lanka.

Source: Wikipedia — Sri Kalyani Yogasrama Samstha (CC BY-SA 4.0)