Flower spikes of cattails
are separated into two portions: one with male flowers and the other with female
flowers. The male flowers are located above the female flowers. Narrowleaf Cattail
has a space between the male and female flowers. After blooming, the male flowers
fall off the plant, leaving only the female flowers.
Compare to Typha latifolia
(Broadleaf Cattail). Broadleaf Cattail does not have a space between the male
and female flowers. As the name suggests, the leaves are also broader.