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Sterculia urens
''Sterculia urens'' is a species of plant in the family Malvaceae. It is native to India and has been introduced into Burma. A small to medium-sized tree with a pale-coloured trunk, it is commonly known as the भुत्या in Marathi (meaning ghost tree), kulu, Indian tragacanth, gum karaya, katira, sterculia gum or kateera gum. The specific name ''urens'' refers to the stinging hairs present on the flowers.〔(【引用サイトリンク】title=Gum karaya )〕
==Description==
The gum karaya is a medium-sized deciduous tree with horizontally-spreading branches, growing to a maximum height of about . The bark is smooth, fibrous and thick, greenish-grey, with the surface layer peeling off in large flakes. The twigs are hairy at first. The leaves are alternate, simple, hairy beneath and have three to five palmate lobes. They are clustered at the tips of the twigs. The flowers are yellowish-green and produced in panicles in the axils of the leaves. They are polygamous (having male, female and bisexual flowers on the same tree) and are clad in sticky or glandular short hairs. The calyx has five lobes and there are no petals. Male flowers have a columnar boss of ten stamens while bisexual flowers have a ring of anthers round the five free, radiating carpels which grow to when fully developed. They are pinkish and densely covered with red hairs, including stinging hairs. They split open when ripe to reveal up to six squarish, brown or black seeds.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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