Malus trilobata country, that is protected, is in Horsh Ehden Nature Reserve and Jabal Moussa Biosphere Reserve. "Malus trilobata" has an upright habit with horizontal branching and a mature size of height by width. The leaves are maple-like and deeply three-lobed. They turn from orange to red to deep purple in the fall. The tree blooms during April and May producing white flowers and yellow fruits. Malus trilobata Malus trilobata, the Lebanese wild apple, erect crab apple or three-lobed apple tree, is a species in the family Rosaceae in the genus "Malus". Some authorities place it in the segregate genus "Eriolobus", as
Étienne-Louis Malus Étienne-Louis Malus Étienne-Louis Malus (; ; 23 July 1775 – 24 February 1812) was a French officer, engineer, physicist, and mathematician. Malus was born in Paris, France. He participated in Napoleon's expedition into Egypt (1798 to 1801) and was a member of the mathematics section of the Institut d'Égypte. Malus became a member of the Académie des Sciences in 1810. In 1810 the Royal Society of London awarded him the Rumford Medal. His mathematical work was almost entirely concerned with the study of light. He studied geometric systems called "ray systems", closely connected to Julius Plücker's "line geometry". He conducted