perianth segment meaning in English

花被片

We compared the pollination characteristics of c . praecox and that of c . nitens . the results are as follows : ( 1 ) the main variation of c . praecox exists in the floral morphological characteristics , including the variation of the color of the interior perianth segments , the color and shape of the middle perianth segments , the number of pistils and stamens , the length of pistils and degradation of stamens , the floral shape and size , etc . . c . praecox ' s florescence is from november to next march , mainly from december to next february
实验结果表明： ( 1 )蜡梅变异主要存在于花部性状，这些性状包括内被片颜色、中被片颜色和形状、雌雄蕊数目、雌雄蕊变异、花型、花径等，在南京地区，蜡梅的花期从11月到翌年3月，主要集中在12月到翌年2月之间，早花期品种和晚花品种较少。