Cayenne pepper is a cultivar of Capsicum annuum, also known as Guinea spice, aleva, bird pepper, and especially in powdered form, red pepper. It is related to bell pepper, paprika and jalapeños. Its heat level is ranged from 30,000-50,000 on SHU (Scoville heat Unit).
Cayenne pepper is a popular spice used in a variety of cuisines and for medicinal purposes. It is available in fresh form, dried and powdered, and as dried flakes. It is also a key ingredient in hot sauces, particularly vinegar-based type.
Cayenne pepper is high in vitamin A, and also vitamin B6, vitamin E, vitamin C, riboflavin, potassium and manganese.
Cayenne pepper http://commons.wikimedia.org/wiki/File:Capsicum_annuum_%27de_Cayenne%27_003.JPG H. Zell