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Leaf Type

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 Compound: The leaf is separated into distinct leaflets, each with its own small petiole (but without an axillary bud). 

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Simple: The leaf may be lobed or divided, but does not form distinct leaflets.

Petiole: The stalk of a leaf. 
Leaf blade: The broad, expanded part of a leaf. 
Leaflet: One of the parts of a compound leaf. Leaflets do NOT have axillary buds. 
Axillary buds: Buds located where a leaf joins a stem.

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