petiole

n. the stalk of a leaf

axil

n. the position between the axis and a lateral organ, such as the point of angle between a stem and a petiole

stipule

n. one of a pair of appendages found at the base of a petiole on many leaves

sessile

a. attached directly, without a supporting stalk, as in a leaf without a petiole or a flower without a pedicel or peduncle

petiolate

a. having a petiole

hastula

n. in palmate and costapalmate leaves, the junction of the leaf and petiole