Angraecum leonis, this individual plant is the Madagascar variety; the other variety is from the Comoros Islands and can be more than double the size (see the post dated February 25, 2013, Angraecum leonis [Size Identifies]). Angcm. leonis, no matter the variety usually will show you when there is a lack of water reaching the plant. When the plant is young, its root system hasn't really reached any length. Leaves that show a sign of wrinkling is a warning that the plant is under stress for lack of water. It is imperative that you watch younger plants for this sign. A strong indication of a healthy root system is the thickness of the leaves; moisture is stored in those leaves where carbohydrates are produced to nourish the plant. The Madagascar variety usually has leaves that are 2 to 3 times thicker. A trait common due to the lack of rain in the region. The Comoros variety receives a large amount of rain and will be more than twice the size as mentioned. As either variety of the plants matures, it will start to produce an aerial root system (in a natural habitat, the root system secures the plant to the branches and limbs and provides more moisture and nutrients).