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Sparganium emersum

名称状态：被SP2000收录，状态为：Sparganium emersum为接受名
科属名称：Typhaceae(香蒲科)  黑三棱属
中文名：小黑三棱
形态描述：Stems emersed, erect, 30-70 cm tall, slender. Leaves 40-80 cm, aerial or floating, lower keeled on abaxial side. Racemes 10-20 cm; male heads 4-8, distinctly separate from female ones; female heads 3 or 4, relatively widely separated, sessile or lowest 1 or 2 pedunculate. Male flowers: perianth segments linear or spatulate, 2-2.5 mm, lobate at apex; filaments ca. 4 mm; anthers oblong, ca. 1.6 × 0.4 mm. Female flowers: perianth segments spatulate, ca. 3.5 mm, lobate at apex; ovary with short stalk; styles ca. 1 mm; stigmas 1.5-1.8 mm. Fruit fusiform. Fl. and fr. Jun-Oct. 2n = 30.
国内分布：黑龙江、吉林、辽宁、内蒙古、河北、河南、陕西、甘肃、新疆
                    
序号标题卷册作者年份页码数据源
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