Question

give an example for parallel leaf viens

Answer 1

I'm going to introduce a quirky example of parallel veined leaves, those of the hardwood tree species from SE Australia, Acacia melanoxylon. This tree, which inhabits temperate through to temperate subtropical regions, appears to have parallel veined leaves, despite being a dicotyledon. These leaves are not actually leaves at all, but modified leaf stalks (petioles) which have evolved into a straplike structure, named a phyllode. Perfectly functional as a leaf.

The tree has normal, bipinnate (fern like) leaves during the first few years of its life, which are gradually replaced with bipinnate leaves with a small phyllode on the end, then these vanish, to be replaced by complete phyllodes.

Answer 2

the example for parallel leaf veins is guava leaf