What is "lesser cat-tail"

cattail \cat"tail\, Cat-tail \Cat"-tail\(k[a^]t"t[=a]l), n. (Bot.) A tall erect rush or flag ( Typha latifolia) growing widely in fresh and salt marshes, with long, flat, sword-shaped leaves, having clusters of small brown flowers in a dense cylindrical spike at the top of the stem; -- called also bulrush and reed mace. The leaves are frequently used for seating chairs, making mats, etc. See Catkin.

Note: The lesser cat-tail is Typha angustifolia.