hamamelidae

3 definitions found

hamamelidae - Collaborative International Dictionary of English v.0.48 :

  Hamamelidae \Hamamelidae\ n.
     a group of chiefly woody plants considered among the most
     primitive of angiosperms; they have a perianth poorly
     developed or lacking, and flowers often unisexual and often
     in catkins and often wind pollinated. The group contains 23
     families including the Betulaceae and Fagaceae (includes the
     Amentiferae); sometimes it is classified as a superorder.
  
     Syn: subclass Hamamelidae.
          [WordNet 1.5]

  Dicotyledonae \Dicotyledonae\ n. (Bot.)
     a class of plants comprising those seed plants that produce
     an embryo with two cotyledons and net-veined leaves; divided
     into six (not always well distinguished) subclasses (or
     superorders): Magnoliidae and Hamamelidae (considered
     primitive); Caryophyllidae (an early and distinctive
     offshoot); and three more or less advanced groups:
     Dilleniidae; Rosidae; Asteridae.
  
     Syn: Dicotyledones, class Dicotyledones, class Dicotyledonae,
          Magnoliopsida, class Magnoliopsida.
          [WordNet 1.5]

hamamelidae - WordNet (r) 2.1 (2005) :

  Hamamelidae
      n 1: a group of chiefly woody plants considered among the most
           primitive of angiosperms; perianth poorly developed or
           lacking; flowers often unisexual and often in catkins and
           often wind pollinated; contains 23 families including the
           Betulaceae and Fagaceae (includes the Amentiferae);
           sometimes classified as a superorder [syn: Hamamelidae,
           subclass Hamamelidae]