PHYLLOTAXIS:

THE ARRANGEMENT OF LEAVES ALONG A STEM

TYPES
:

   1. OPPOSITE
       2. ALTERNATE
       3. WHORLED

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ALTERNATE  \|
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WHORLED

LEAF COMPLEXITY

LEAVES CONSIST OF A PETIOLE AND A BLADE

IF THE BLADE IS NOT DIVIDED THE LEAF IS SAID TO BE SIMPLE

IF THE BLADE IS DIVIDED THE LEAF IS SAID TO BE COMPOUND

SOME LEAF TYPES:

SIMPLE 

PINNATELY COMPOUND

BIPINNATELY COMPOUND


LEAF VENATION

PARALLEL VENATION (MONOCOT)

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NET VENATION (DICOT)

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SPECIALIZED LEAVES

1. ONION BULBS
2. STIPULES
3. SPINES (CACTUS)
4. TENDRILS

SPECIALIZED STEMS

1. CACTUS PADS (CLADOPHYLLS)
2. TUBERS
3. CORMS
4. STOLONS
   A. STRAWBERRIES
   B. SPIDER PLANTS