This is Khat. These are the tips of the plant which are strongly potent. Quote:Muguka is the top leafy part of the Khat plant, which according to the people from Meru county, is cheaper and more effective (steam) than the original and more expensive part of the plant. http://www.nairobigossips.com/2015/10/you-thought-kenyans-eat-muguka-wait.html And here: muguka aka ketepa, these are the leaves that are cut from the same tree that produces miraa. http://www.jamiiforums.com/threads/miraa-khat-mirungi.40641/page-3