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Entire - smooth margin

Simple leaf

Compound leaf

Whorled leaves

Opposite leaves

Alternate leaves

Pinnate compound

Palmate compound

Double serrate

Lobed leaf with sinus

V shaped sinus Red maple

U shaped sinus Sugar Maple

V shaped sinus Silver Maple


lance-shaped, longer than broad, wider at the base, tapering toward the apex


football shaped, pointed on ends biggest in middle




triangle shaped


Teardrop-shaped, stem attaches to tapering point

leaf blade

especially a leaf of grass or the broad portion of a leaf as distinct from the petiole


Includes the blade and the petiole


the slender stem that supports the blade of a leaf


Holds leaflets

pinnate veination

A vein system in a leaf that runs parallel to itself

palmate veination

Vein system in a leaf that does not run parallel to itself

asymmetrical base

A leaf with an uneven base (where the leaf meets the stem).


the small, paired appendages that are found at the base of the petiole of leaves of flowering plants


the vein in the center of a leaf


the part of the stamen that contains pollen


the stalk of a stamen


the apical end of the style where deposited pollen enters the pistil


The tube that transport the pollen to the ovary.


a structure containing egg cells; the base of a pistil in a flower


Structure that develops within ovary of seed plant and contains female gametophyte.


a leaflike structure that encloses the bud of a flower


unbranched inflorescence of pediceled flowers that open from bottom to top


flat-topped or rounded inflorescence characteristic of the family Umbelliferae in which the individual flower stalks arise from about the same point


(botany) an indeterminate inflorescence bearing sessile flowers on an unbranched axis


a winged often one-seed indehiscent fruit as of the ash or elm or maple


the seedpod of a leguminous plant (such as peas or beans or lentils)

terminal bud

bud at tip of a stem responsible for terminal growth


Spongy segments in bark that allow gas exchange between cells in a woody stem and the atmosphere. Adaptation for plants living in wet conditions.

lateral bud

Buds along the sides of a stem that givie rise to new branches.

leaf scar

a scar on a stem where a leaf has been attached in a previous year

vascular bundle scar

spot within a leaf scar left by the vascular bundle (xylem and phloem)


covered with fine soft hairs or down


point on a stem where a leaf is attached


a segment of a stem between two nodes

growth rings

layer of wood a tree adds during a growth season, usually a year

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