The sporophyte (1) of Equisetum produces a terminal strobilus with whorls of hexagonal sporophyll scales. Attached to each scale are sporangia (2) containing homosporous spores. The spores go through meiosis and produced spore tetrads (3). The spore tetrads mature with attached elater tissue necessary to keep the spores air borne
Return to Main Menu Division Sphenophyta