CC Ādi 11.5

śrī-nityānanda-vṛkṣera skandha gurutara
tāhāte janmila śākhā-praśākhā vistara
Word for word: 
śrī-nityānanda-vṛkṣera — of the tree known as Śrī Nityānanda; skandha — main branch; gurutara — extremely heavy; tāhāte — from that branch; janmila — grew; śākhā — branches; praśākhā — subbranches; vistara — expansively.
Translation: 
Śrī Nityānanda Prabhu is an extremely heavy branch of the Śrī Caitanya tree. From that branch grow many branches and subbranches.