Cataphyll

Cataphylls are specialized leaf structures that take on special functions and therefore differ from true leaves ("euphylls") in form and function.
In anthuriums, cataphylls are usually protective covers that cover and protect the new leaves as they sprout.
They are often tough, papery or membranous and can be green, brown or other colors. They envelop and protect the tender, emerging shoot from possible damage, harsh environmental conditions and herbivores until they outgrow the cataphyll and the leaves unfurl and become mature leaves.

In summary, Anthurium cataphylls are specialized, protective leaf structures that play a crucial role in protecting new shoots and plant growth.

In addition, the cataphyll plays a not unimportant role in botany when it comes to identifying or describing plants. What is relevant here, for example, is how the cataphyll dries and whether it falls off independently at some point or remains permanently attached to the trunk.