Phyllode is a petiole or rachis modified into a leaf like structure e.g. Acacia. It has bipinnate leaves. The leaflets fall off early. Then rachis develops into leaf like phyllode. Phyllode is a xerophytic adaptation to reduce transpiration through leaves.
A phylloclades is a stem modified to perform the function of a leaf in some xerophytic plants. It may be flattened as in Opuntia or cylindrical as in Casuarina. They contain chlorophyll and carry out photosynthesis. They have several nodes and internodes.
![Phyllode (Acacia) and phlloclades (Opuntia) Phyllode (Acacia) and phlloclades (Opuntia)](http://lh6.ggpht.com/-CySBQ1nozjs/Un8xlwVvQRI/AAAAAAAAAUw/Gu2Z9Mg9Sgc/Phyllodeandphlloclades5.gif?imgmax=800)
Phyllode vs Phylloclade
Phyllode
|
Phylloclade
|
It is the modification of leaf (petiole). | It is the modification of stem. |
The petiole becomes flattened, green, leaf like and performs photosynthesis | The stem becomes flattened, green, leaf like and performs photosynthesis. |
It bears an axillary bud | It arises in the axil of a leaf |
It does not bear flowers and buds | It bears flowers and buds |
Branching is absent. | It may show branching. |
Spines are absent. | Spines may be present which are modified axillary buds. |
Scale leaves are absent. | Ordinary leaves are modified into scale leaves. |
Nodes and internodes are absent. | Nodes and internodes are present. |
Example: Melanoxylon, Acacia | Example: Cactus, Cocoloba |
Thank u so much. I used to b confused bout these two even after knowing..reading this clears it
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ReplyDeletedifferent between phylloclade and parenchymatous tissue?
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