Preposition: of

• leaf: The petiole of the leaf is more difficult to interpret.

Converse of object

• clasp: With this change, great durability is probably acquired; at least this is the case with the clasped petioles of Clematis vitalba.

• bring: This movement of the leaves would aid that of the internodes in bringing the petioles into contact with surrounding objects.

Adjective modifier

• main: The main petiole bends a little angularly downwards at each point where a pair of leaflets arises ( see fig.

• young: I gently rubbed with a thin twig the lower surfaces of two young petioles; and in 2 hrs.

• short: Straight, thin, black lines of this length were now drawn from the bases of the short petioles along the hypocotyls Fig.

• long: The leaves are fan-shaped with parallel veins on long slender petioles.

• confluent: As soon as the confluent petioles protrude from the seed they bend down, as they are strongly geotropic, and penetrate the ground.

• whole: Nevertheless they sufficed to attract the eye, when the whole petiole was viewed as a transparent object beneath the microscope.

Modifies a noun

• gland: The petiole glands are little bumps that secrete nectar.

Noun used with modifier

• sub-: Each bears three pairs of lateral leaflets and a terminal one, all supported on rather long sub- petioles.