There are 17 spieces of Capsicum Chinese. For a full list click here.
CHILLI PEPPERS AKA: chili, chile
Habanero – there are more than 15 varieties of Habanero made by selective breeding to create variations in heat. Colours vary from green to yellow, orange, red and even brown. Heat 100,000–350,000 SHU
Scotch Bonnet – colour range: yellow to scarlet red. Can also be orange, yellow, peach, or even chocolate brown. Heat 150,000–325,000 SHU
Ají dulce – varies in colour. Heat 0-1,000 SHU AKA: ají cachucha, quechucha, ajicito, or ají gustoso
Scoville Heat Units (SHU)
The Scoville Heat Units was developed by Wilbur L. Scoville (1865-1942). The scale measures the the amount of capsaicin in peppers. Capsaicin is the chemical mix found in peppers that causes it to burn on your tongue and make you sweat. Most capsaicin comes from the seeds and the ribs of the pepper.
The larger Scoville Heat Units a pepper (or a hot sauce) is assigned, the hotter it is.