maNipravALA~nchita sUktisUnai:
	vibhUShitAsheSha sahasrashAkham |
akalpayat ka~nchana kalpavR^iksham 
	kR^iShNa: kshitau lokagurUttamAkhyam ||

Meaning:

ka~nchana kalpa vR^iksham 	- The unparalleled Karpaga tree
loka gurUttamAkhyam 		- known as Pillai Lokacharyar
asheSha sahasra shAkham 	- has thousands of branches
vibhUShita 			- that are decorated with
a~nchita 			- beautiful
sUkti sUnai: 			- flowers that are Sri Suktis, which are
maNi pravALa 			- made of Sankrit and Tamil,
akalpayat 			- was created by
kR^iShNa: 			- Vadakkuth Thiruveedhip Pillai.

Vyakhyana Saram:
Pillai Lokacharyar is the eldest son of Sri Krishnar, also known as Vadakkuth Thiruveedhip Pillai. In this shloka, Swami Desikan is saying that Sri Krishnar brought forth an amazing Karpaga Vruksham. Azhvars have compared the Lord to a Karpaga tree ("sezhung kaRpagaththai", "karpagach sOlai" etc), Desikan has called Andal a Karpaga creeper ("shrI viShnu chitta kula nandana kalpa vallIm") and acharyas have glorified other acharyas as Karpaga trees (Ramanuja Nutrandhadhi states "ennai ALa vandha kaRpagam" about Ramanuja). Desikan is following that tradition in this shloka.

The Karpaga tree (or Kalpa tree) would have countless branches and flowers. Desikan is showing the similarity with Lokacharyar - he too has countless grantha vakhyams (which are like the branches of a tree) and these give rise to the flower like beautiful maNi pravALa letters and words which are the Sri Suktis of Pillai Lokacharyar.

And just as the Karpaga tree showers those who seek shelter under it with everything that they need, so too Swami Lokacharyar showers through his divine Sri Suktis the most amazing meanings of the sampradhayam, which is all that the devotees need.