Book excerpt: Henry marches to the beat of his own green thumb in this gentle picture book about a boy on the autism spectrum. Henry doesn't remember to raise his hand and he prefers to call plants by their proper Latin names, much to the frustration of his classmates. Most days, Henry doesn't notice how different he is from the other kids in his grade, but some days, he does. On those days, he finds refuge under the shade of the Salix babylonica (willow tree) or in the school counselor's office or at his very favorite place in the world: the local botanical gardens. When his class goes on a field trip to these botanical gardens, Henry’s knowledge of the flora and fauna show the other kids that his unique interests are really something special.