CC Ādi 9.18

viśa viśa śākhā kari’ eka eka maṇḍala
mahā-mahā-śākhā chāila brahmāṇḍa sakala
Word for word: 
viśa viśa — twenty, twenty; śākhā — branches; kari’ — making a group; eka eka maṇḍala — form a society; mahā-mahā-śākhā — big branches; chāila — covered; brahmāṇḍa — the whole universe; sakala — all.
Translation: 
Thus the branches of the Caitanya tree formed a cluster or society, with great branches covering all the universe.
Purport: 

Our International Society for Krishna Consciousness is one of the branches of the Caitanya tree.