I'm working on a series of mods that enlarge/add agricultural fields throughout morrowind (purely using vanilla resources). As I was working I noticed that I have some flora containers I didn't recognize and I was wondering were they are from.

they are as follows;
Horn Lily
Nirthfly Stalks
Timsa-Come-By Flowers
Meadow Rye
Flowering Sweetbarrel
Deserrt Sweetbarrel
Scrib Cabbage
Spiny Lloramor

If anyone could tell me where they came from I'd be very appreciative (They look great and I hope to able to able to use them to enrich Morrowind's agricultural sector).

Those are all from the Tribunal expansion pack, you will find them only in Mournhold

Have you looked here? => http://www.uesp.net/wiki/Lore:Flora

Thank you... excellent, Lore Friendly and everything, that'll really help diversify my farms (there is only so much Salt rice and wickwheat you can grow and not seem redundant.