中文摘要：

花蔺（Butomus umbellatus）为花蔺科（Botomaceae）多年生水生草本,野生状态下的花蔺花冠多为粉红色,但在黑龙江省密山县发现了罕见的白色花瓣表型。本研究通过对比不同表型的花部特征和物候等特征,发现两种表型的差异：两种颜色的个体在不同年份之间基本稳定,但极端情况下可能存在一定的波动;红白两种花色表型的特征没有显著差异,仅仅在花序轴的直径上存在差异。总体而言,花展示高度、雄蕊长度、雌蕊长度均不存在显著性的年份波动,但花展示高度在不同年份之间存在波动。盛花期的雄期和雌期存在花期的重叠,两者的比例在不同花色表型中无显著性差异。造成红白差异的原因是复杂的,可能与适应当地的环境有关,但波动的自然环境可能也会起到一定的作用。

英文摘要：

Butomus umbellatus（Botomaceae） is a perennial aquatic herb, usually with pink corolla in the wild.But a rare white petals phenotype was discovered in Mishan County, Heilongjiang Province. By comparing of floral characteristics and flowering phenology between the different morphs, we found that two colors individuals performed stably between different years, but may fluctuate in extreme conditions; there was no significant difference between pink and white color plants except in diameter of inflorescence axis. Overall, no difference of flower display, stamen length, pistil length of two morphs was detected between different years, however, flower display fluctuated between different years. The florescence of male and female were overlapped when peak flowering, and the proportion of male and female between two morphs had no significant different. The causes of differences between red and white are complex, and may be adaptation to the local environment, but the fluctuating natural environment may also play a role.