1. A flattened or leaf-like stem that functions as a leaf in photosynthesis, found in certain plants such as cacti and asparagus ferns.
Usage: botanical term; also called cladode

Examples

• The phylloclade of the Christmas cactus is actually a modified stem, not a true leaf.
• Many succulent plants use phylloclades to reduce water loss in arid environments.
• The flat, green structures on the asparagus fern are phylloclades that perform photosynthesis.
• Botanists distinguish between phylloclades and true leaves by examining their internal structure.
• The phylloclade allows certain plants to thrive in dry climates where large leaves would be disadvantageous.