All tea comes from the same tea plant Camellia Sinesis. Sencha, Gyokuro, oolong, Pu'er, Matcha andd all the others come from one plant. There are different varieties and variations of those varieties (cultivars) and the way the tea is grown and harvested and processed make for the wide variety we have to enjoy. Please see our Types of Green Tea page for details or our discussion on the versatile tea plant to get the details.