About Eleocharis acicularis (L.) Roem. & Schult.
Eleocharis acicularis (L.) Roem. & Schult. is a species of spikesedge, commonly known as needle spikerush and least spikerush. It has a widespread distribution across Europe, central and southeastern Asia, North America, and northeastern South America, ranging as far south as Ecuador. It also grows in Australia, where it is most likely an introduced species. This spikesedge can be an annual or perennial plant that grows from a creeping rhizome, producing long, grasslike stems that reach roughly 15 centimeters (6 inches) in height; stems are shorter when growing in bog conditions. When growing in shallow water, it produces short spikes of tiny flowers arranged among flat overlapping bracts. The tiny flowers are less than five millimeters in diameter, and are borne at the tip of each stem in single, sharply pointed, lanceoloid spikelets that grow up to about six millimeters long. This species naturally grows in marshes, vernal pools, and bogs. Eleocharis acicularis is sold commercially as an aquascape plant, suitable for growing in artificial aquatic environments. It thrives in conditions with plenty of light and a high concentration of carbon dioxide. The specific epithet acicularis comes from Latin, and means "needle-shaped".
