Long-beaked Arrowhead: Sagittaria australis
|Weed Description: A shallow
perennial aquatic weed with leaves shaped like an arrow. Leaves are usually above
the water, but sometimes may be under or floating on the water.
Leaves: Arrow-shaped, with the lobes turned downward (sagittate), 4-12 inches long. The leaves occur on petioles that may reach 3 feet in length. Distinct veins can be observed on the leaves that arise from a common point (palmate veination, illustrated in the picture below).
|Stems: The flowers and fruit
are produced on leafless stems (scapes) that may reach 1 1/2 to 3 feet in height.
Fruit: Egg-shaped achenes that are widest at the apex (obovate), and approximately 2 inches in length. Several achenes may occur on each scape.
|Flowers: Usually consist of 3
sepals and 3 white petals that are 8-14 mm long.
Roots: A corm which is often a thickened base that resembles a bulb.
Identifying Characteristics: Arrow-shaped leaves with distinct palmate veination and scapes that are usually longer than the leaves.