首頁   計劃介紹    

English Version

Plants of Taiwan

  • plantname
  • planetbook
  • 回目錄頁

    台灣植物誌 第一版  Flora of Taiwan, 1st edition    Vol. 1

      / 582
    last page

    上一頁

    台灣植物誌第一版  Flora of Taiwan, 1st edition  1: 19

    Pteridophytes are vascular plants that reproduce by spores, they include the fern allies, homosporous ferns and the aquatic heterosporous ferns. With the excep- tion of the heterosporous ferns and heterosporous fern allies, all others produce spores which develop into an independent gametophyte which bear antheridia and archegonia. The gametophytes like the sporophytes, vary much in form, some develop below the soil and contain endophytic fungi while most of them develop as small chlorophyll bearing thalloid or filamentous plants.
    Pteridophyta is subdivided into the four subphyla: Psilopsida, Lycopsida, Sphenopsida and Filicopsida. The first three subphylla are commonly referred to as fern allies. The subphyllum Filicopsida contains both the eusporangiate and leptosporangiate ferns.
    I. PTERIDOPHYTA Ӫ