Leonardo da Vinci’s sketch of a tree illustrates the principle that combined thickness is preserved at different stages of ramification.

The math that describes the branching pattern of trees in nature also holds for trees depicted in art—and may even underlie ...

It appears he was set for an approved-by-Michaels sketch in which the business mogul would be dressed up like a tree while standing next to Shel Silverstein’s titular Giving Tree, who offers up ...

Osis // Ash; Kastanis // Chestnut; Ozols // Oak; Egle // Fir; Pīlādzis I // Rowan I; Akācija // Acacia; Dižskābardis // Beech; Pīlādzis III // Rowan III ...

13 x 19.38 in. (33 x 49.2 cm.) Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...