台湾黄眼草
台湾黄眼草(拉丁学名:Xyris formosana),中国特有植物。丛生草本植物。叶狭线形,侧面扁平,顶端渐尖,干时具条纹,边缘具微小乳突,叶鞘具彩云阁状突起。主要生长于沼泽湿地。台湾黄眼草列入《世界自然保护联盟红色名录》(IUCN)中,保护级别为濒危(EN)。
基本资料
种中文名:台湾黄眼草
种拉丁名:Xyris formosana Hayata
科拉丁名:黄眼草科
属拉丁名:Xyris 。
外观形态
台湾黄眼草(Xyris formosana Hayata, Icon. Pl. Formos. 5: 237. 1915; Y. P. Yang 台湾植物志 5: 176. 图1312. 1978.),丛生草本植物。叶狭线形,侧面扁平,顶端渐尖,干时具条纹,边缘具微小乳突;叶鞘具彩云阁状突起。
花序特征
台湾黄眼草花葶圆柱形或近圆柱状;头状花序近球形;基部苞片椭圆形,顶端微缺,沿中脉上半部有乳突,并具4条下行侧脉;中部苞片宽椭圆形,下端较狭,有5-7条下行脉,而外侧的脉常弯曲,苞片上部有一正三角形的乳突区,顶端具小刺尖,中脉处增厚,暗褐色,边缘薄而色较浅。
台湾黄眼草侧生的2枚萼片舟状,弯曲,膜质而透明,长4-6毫米,宽1.4-2毫米,顶端锐尖或稍尖,通常上部边缘有细锯齿,背部彩云阁状突起较窄,两边不等,向基部渐狭;中间的萼片风帽状,长约2.5毫米,薄而透明,具1脉;花瓣具3脉,檐部倒卵形;雄蕊长约0.4毫米,宽0.1毫米,内面的膛室比外面者稍长,钝头;药隔有膜质翅;退化雄蕊长约4毫米,顶端2分叉,画笔状;子房倒卵形,宽约2.5毫米;花柱上部3裂。
生境分布
台湾黄眼草产于中国台湾省。生于沼泽湿地。台湾黄眼草模式标本采自台湾省。台湾黄眼草未见标本,描述摘录自《台湾植物志》。
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参考资料
植物通,台湾黄眼草.www.zhiwutong.com.2010-09-21