mfagan

 

biol 325

Page history last edited by Anonymous 2 yrs ago

http://www.biology.uwaterloo.ca/undergraduate/courses/biol325/

 

 

 

 

  • leaf variation: alternate, opposite, whorled, basal

 

 

primitive (non-derived) stuff

  • varying numbers of parts
  • gradient rather than binary differentiation
  • fused parts is more advanced
  • bilateral symmetry is more advanced
  • fewer stamens is more advanced (generally, but some advanced have many stamens as pollinator fodder)
  • 3-merous is primitive

 

 

Nymphaea

  • mix of primitive and derived
  • "petals" actually staminoids

 

 

flower

  • pedicel
    • bract
  • perianth
    • tepals or (sepals making a calyx and petals making a corolla)
  • if no androecium then carpellate, no gynoecium then staminate
  • androecium
    • stamens
      • filament
      • anther holds pollen sacs
      • filament and anthers joined with connective
  • gynoecium
  • hypanthium....
    • anhypanthium
  • nectaries

 

 

 

lab 1

 

nymphaeceae/nymphaea, aristolochiaceae/asarum, magnoliaceae/magolia, calycanthaceae/calycanthus, ranunculaceae/ranunculus

 

 

  • basal paleoherbs
    • Nymphaea
  • Magnoliids
    • Magnolia
    • Calycanthus
  • basal tricolpate eudicots
    • Ranunculus

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