Botany - leaves and leaf arrangement Flashcards
Leaves are arranged at one leaf per node on different sides along the stem
Alternate leaf arrangement
The flattened, green portion of the leaf
Blade
A leaf with the blade divided into multiple leaflets
Compound leaf
Vegetative plant parts that are lateral outgrowths of stems that have developed special structures for photosynthesis
Leaf
A leaf margin that is smooth with no serrations or teeth
Continuous
A protruding part of the leaf margin, alternating with sinuses
Lobe
The edge of a leaf blade
Margin
Leaves arising from opposite sides of the same node
Opposite leaves
Leaves with netted veins having several large veins radiating into the blade from the leaf stalk at the level where the leaf stalk and blade join
Palmate venation
A compound leaf with all the leaflets arising from one point at the end of leaf stalk
Palmately compound leaf
Leaves with large veins that are essentially parallel to one another and are not connected by lateral veins
Parallel venation
The leaf stalk
Petiole
Leaved with netted veins where secondary veins extend laterally from a single midrib
Pinnate venation
A compound leaf with the leaflets arranged along both sides of the midrib
Pinnately compound leaf
Hairs or fuzz found on various plant parts
Pubescence
