Typha angustifolia

Typha angustifolia grows high (rarely to 3 m) and has slender leaves broad, obviously slenderer than in the related Typha latifolia; ten or fewer leaves arise from each vegetative shoot. The leaves are deciduous, appearing in spring and dying down in the autumn. The flowering stem is tall, distinctly shorter than the leaves and hidden among them, unlike Typha latifolia where the flowering stem is as tall as or taller than the leaves. The flowers form in a dense cluster at the top of the main stem; they are divided into a female portion below, and a tassel of male flowers above; the female and male parts are separated by a gap of (rarely to 12 cm) of bare stem, which distinguishes the species readily from Typha latifolia where there is no gap between the female and male flowers. The plants have sturdy, rhizomatous roots that can extend and are typically diameter. == Distribution ==

The species is universally accepted to be native across most of Eurasia, and in the far northwest of Africa, where it is widely distributed in temperate and subtropical regions, growing in marshes, wetlands, and along the edges of ponds and lakes. Later, pollen data gave credence to the idea that the species was present in North America pre-contact, but subsequent examination of this question suggests it remains very uncertain: "T. angustifolia is likely not native with European origins", with the species no more than "possibly native to the tidal wetlands of the eastern seaboard". Within North America, it is also thought to have spread recently from coastal to inland locations. The geographic range of Typha angustifolia overlaps with the very similar species Typha latifolia. T. angustifolia can be distinguished from T. latifolia by its narrower leaves and by a clear separation of two different regions (staminate flowers above and pistilate flowers below) on the flowering heads. ==Culinary use==

Several parts of the plant are edible, including during various seasons the dormant sprouts on roots and bases of leaves, the inner core of the stalk, green bloom spikes, ripe pollen, and starchy roots. It can be prepared in the same way as Typha latifolia. The edible stem is called bồn bồn in Vietnam.photo ==References==