Lab 1: Identifying Plants by Leaves

Node

region of stem where leaves, buds arise

Is this simple or compound?

simple (single leaf; not further divided)

Is this simple or compound?

compound (a leaf whose blade is divided into several segments or leaflets)

Is this twice, triple, or quadruple pinnately compound?

twice pinnately cmp

Is this pinnate compound or palmate compound?

palmate

opposite

leaves opposite of e/o on the stem

alternate

leaves alternate each other

spiral

leaves spiral all around the stem

whorled

3 or more leaves at one node

basal

leaves at the base of the stem

What is the leaf outline?

entire (leaf w/o teeth or lobes)

what leaf outline is this?

lobed

What leaf outline is this?

toothed

What leaf shape is this?

linear

What is the leaf shape?

ovate (egg-shaped)

What is the leaf shape of this?

elliptical

Name the leaf modification. What are they used for?

tendrils used for climbing

What leaf type is this?

awl-shaped

What leaf type is this?

scale-like

What leaf type is this?

needle-like

What leaf type is this?

sessile (leaves w/o petioles)

palmate venation

veins radiating from the petiole

pinnate venation

a midvein with secondary, smaller veins branching off from either side of the midvein

parallel venation

veins that are parallel to e/o

What is a leaf defined by?

the location of the axillary bud

What leaf tip is this?

cleft

What leaf tip is this?

round

What leaf tip is this?

pointed