heterotropous ovule

英 美
  • 横生胚珠
    1. The ovule is unitegmic,tenuinucellate and anatropous.
      薄珠心,单珠被,倒生胚珠,蓼型胚囊。
    2. Frequently the basal ovule, which is the last one to be fertilized would abort.
      最后受精的基生胚珠经常败育。