Ok, indica plants grow small, but thick. The blades on the leaves are very wide, close together and in some cases, even webbed leaves. An indica dom. strain will give you a couchlock/narcotic high and flowering time is uaully shorter than sativa

A sativa plant, grows tall and lanky. The leaves are much thinner, and there is space between each bladed leaf. An sativa stone will give you an up/energetic high. They take a long time to finish flowering but very well worth it.

There are 100% indica strain, there are 100% sativa too, but in a lot of cases in plantsd, there is a mix of the 2. I personally like a mix of the 2, that way you get a sativa stone and an indica stone. I'll try and find some pics, hold on...