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''Blitum'' is a flowering plant genus from the subfamily Chenopodioideae in the Amaranthaceae family. It is closely related to genus ''Spinacia''. Its 12 species were traditionally grouped into genera ''Chenopodium'', ''Monolepis'', or ''Scleroblitum''. The species of genus ''Blitum'' occur in Asia, Europe, North Africa, the Americas, and Australia. == Description == The species in genus ''Blitum'' are non-aromatic annual or perennial herbs. They are glabrous, or sometimes covered with stipitate vesicular hairs, young plants may be sticky. From the base emerge several erect, ascending or prostrate stems, that are unbranched or sparsely branched. The alternate leaves consist of a petiole and a simple blade. The basal leaves are often long-petiolate and forming a rosette. The leaf blade is thin oder slightly fleshy, and may be triangular, triangular-hastate, triangular-lanceolate, or spathulate, with entire to dentate margins. The inflorescences consist of spicately arranged compact glomerules of flowers, ebracteate or in the axils of small leaf-like bracts. Flowers are bisexual or pistillate. They contain (1) 3-5 herbaceous, unkeeled perianth segments, connate only at base or nearly to the middle, sometimes missing; a circle of 1-5 stamens; and an ovary with 2-4 stigmas. In fruit, the perianth becomes either succulent or dry and hard. The pericarp is membranous and usually adhering to the vertically orientated, broadly ovate to orbicular seed. The seed coat is dark brown to black, its surface can be dull, almost smooth, slightly striate, rugulose, or reticulate. 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「Blitum」の詳細全文を読む スポンサード リンク
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