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''Alternanthera sessilis'' is an aquatic plant known by several common names, including sessile joyweed and dwarf copperleaf. It is used as an aquarium plant. The plant occurs throughout the tropical and subtropical regions of the Old World. It has been introduced to the southern United States, and its origins in Central and South America are uncertain. The leaves are used as a vegetable.〔Grubben, G.J.H. & Denton, O.A. (2004) Plant Resources of Tropical Africa 2. Vegetables. PROTA Foundation, Wageningen; Backhuys, Leiden; CTA, Wageningen.〕 Young shoots and leaves are eaten as a vegetable in Southeast Asia. Occasionally it is cultivated for food or for use in herbal medicines. This species is classified as a weed in parts of the southern States of the USA. It is usually (but not always especially in areas of high humidity where it can even be a garden weed) found in wet or damp spots. This is a perennial herb with prostrate stems, rarely ascending, often rooting at the nodes. Leaves obovate to broadly elliptic, occasionally linear-lanceolate, 1–15 cm long, 0.3–3 cm wide, glabrous to sparsely villous, petioles 1–5 mm long. Flowers in sessile spikes, bract and bracteoles shiny white, 0.7-1.5 mm long, glabrous; sepals equal, 2.5–3 mm long, outer ones 1-nerved or indistinctly 3-nerved toward base; stamens 5, 2 sterile. In the wild it flowers from December till March. ''Aerva lanata'' is often mistaken for ''Alternanthera sessilis'', which is also of the Amarantheceae family, and looks similar. On careful observation you will notice that flowers of ''Alternanthera sessilis'' are situated over the stem and their shape is round. As its flowers look like the eyes of a fish, ''Alternanthera sessilis'' is called Matsyakshi, fisheyed. Other Indian names of this plant are Koypa (Marathi), Honganne (Kannada), Ponnaganti koora (Telugu),Ponnanganni Keerai(பொன்னாங்கண்ணி கீரை)(Tamil). Leaves along with the flowers and tender stems are used as vegetable in Karnataka, Andhra Pradesh & Tamil Nadu. It is diuretic, tonic and cooling. Juice of this plant, deemed beneficial to eyes, is an ingredient in the making of medicinal hair oils and Kajal (kohl). The red variety of this plant is a common garden hedging plant, which is also used as a culinary vegetable. This plant is available in the aquarium trade though it will not grow submersed for anything but short periods. However it can be useful in the tropical pond or terrarium though needs restriction as it can grow and propagate quickly under good conditions. ==Gallery== File:Alternanthera sessilis W IMG 3423.jpg File:Alternanthera sessilis W IMG 3422.jpg File:Alternanthera sessilis W3 IMG 3422.jpg VISHAVJEET抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Alternanthera sessilis」の詳細全文を読む スポンサード リンク
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