Palmate

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1. three or more leaflets radiating fan-like from a common base (for example, Horsechestnut); may also refer to lobes of some leaves (for example, Sugar Maple).
2. compound leaf in which all leaflets attached at same point also pattern of veins radiating from the junction of the petiole and the lamina.

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Leaf shape variations.
Source: http://hvp.osu.edu/hcs300/glossary/compound.htm

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When 3 or more leaflets radiate from the same base, a compound leaf is considered palmate.
Source: http://www.amnh.org/learn/biodiversity_counts/ident_help/Parts_Plants/types_of_compound_leaves.htm