Let's clear this up:
As mentioned and shown with pictures in the second post of this thread above, "curry plant" is a common name for multiple plant species. In order to be accurate, you must refer to the Botanical/Latin/Scientific name to avoid confusion.
The "curry plant" Harupa was asking about is not the same plant which yields kari patta, or "curry leaves". Although this curry plant is widely grown as an herb, and does smell like curry, it is not the same plant which has for centuries been used on the asian sub-continent in the preparation of curry dishes. The curry plant in question by Harupa is actually Helichrysum Angustifolium, of the family "Compositae", and originated in either Africa or Australia.
The plant which yields "curry leaves" is actually Murraya Koenigii, of the family "Rutaceae", and has been described by various sources as being, "an Asiatic shrub with pungent leaves". Indian cookbooks equate "kari patta" (and it's other dialectic names) with Murraya Koenigii.