As nouns the difference between litchee and lychee
is that litchee is alternative form of lang=en while lychee is the Chinese tropical fruit tree Litchi chinensis, of the soapberry family.
lychee
Alternative forms
* leechee, lichee, lichi, litchi
Noun
(
en noun)
The Chinese tropical fruit tree Litchi chinensis , of the soapberry family.
That tree's bright red oval fruit with a single stone surrounded by a fleshy white aril.
References
* The OED lists this as a variant of litchi .
* Webster’s Third New International lists this as a variant of litchi .