Ithae, a food stuff found in the mountains to the south of the city of Kis, growing wild it is a hardy food capable of growing in the harsh areas of the Mountains. It was of course found by a scouting group in the mountains, who had managed to fallen prey to a landslide, cutting them off from the known path home.
Their Leader, a female named Ithae, the msot experianced scout in the area, managed to keep her party alive through the long trek home through a dozen valleys, by finding this plant (there were a few false starts, for instance a plant called the Y'ith was found, it unforutantly caused severe bowel movements, it was identified by a green leaf with a splotchy yellow pattern on it, the seeds made a good herb however, having a pungent aroma). Regardless Ithae found a plant, with a purple stalk and purple-green leaves, these leaves and stalks proved nourishing enough, having a slightly bitter sweet taste. The real food however was the tuber, a yellow-purple ring that formed at the ends of the roots of the plant.
Combined these managed to preserve the party. Ithae also found tracks of what appeared to be large game, but the animals seemed to have migrated for the season, or ran away.
When she returned, this plant was first introduced as a crop in the city of Kis, and it proved to be succesfull, making up a large portion of the crops (although by no means was it total, variety is the spice of life). This crop then began to spread further down river, to the various villages, making a jump to the other cities, and spreading out from them also.
However, the main thing that Ithae found evidence for in the mountains was taken straight to the King, and it warranted the expansion south into the mountains, in an attempts to utilise the find. The mountains were later named Arimaspea.
OOC: I also name the river Syanis.