Types of Leaf Forms Flashcards
leaves may also be formed of lobes where the gaps between lobes do not reach to the main vein.
simple leaf
forming leaflets that are attached to the middle vein but have their own stalks.
compound leaf
The leaflets of _____________ leaves radiate
outwards from the end of the petiole.
palmately-compound
They have their leaflets arranged along the middle vein
Pinnately-compound
leaves have their leaflets arranged along a secondary vein,
which is one of several veins branching off the middle vein.
Bipinnately-compound (double-compound)
also known as double-compound
Bipinnately-compound
a leaf with an undivided blade
simple leaf
a leaf where the blade is divided, forming leaflets.
compound leaf
leaf that has its leaflets radiating outwards from the end of the petiole.
Palmately compound leaf
a leaf where the leaflets are arranged along the middle vein.
Pinnately compound leaf
The two basic forms of leaves that can be
described considering the way the blade (or lamina)
is divided.
simple leaf and compound leaf
In _____________, the lamina is continuous.
simple leaves
example of a plant with simple leaves
banana plant (Musa sp.)
In ___________, the lamina is separated into leaflets
compound leaves
Two types of compound leaves
palmate and pinnate
example of a plant with palmately compound leaves
horse chestnut (Aesculus hippocastanum)
In this kind of leaves, the leaflets branch from the petiole.
palmately compound leaves
In this kind of leaves, the leaflets branch from the midrib.
pinnately compound leaves
example of a plant with pinnately compound leaves
scrub hickory (Carya floridana)
In this kind of leaves, the leaflets branch from the veins.
double compound leaves
example of a plant with double compound leaves
honey locust
In this kind of leaves, leaflets branch from the veins.
double compound leaves
example of a simple leaf plant that has lobes
maple leaf
Each leaflet in a compound leaf is attached to
the ______ (middle vein), but may have its own stalk
Rachis
examples of plants with palmately compound leaves
poison ivy, the buckeye tree, Schefflera sp. (umbrella plant)
they take their name from their feather-like appearance
Pinnately compound leaves
example of plants with pinnately compound leaves
rose, hickory, pecan, ash, or walnut trees
In a pinnately compound leaf, the middle vein is called
the ________.
midrib
_______ leaves are twice divided; the leaflets are
arranged along a secondary vein
Bipinnately compound leaves
Each leaflet is called a _________. The ______ on one
secondary vein are called _______.
pinnule, pinnules, pinna
example of a plant with bipinnately compound leaves
Silk tree (Albizia)
