Giant Ragweed [English]: Ambrosia trifida
Giant Ragweed [English]: Ambrosia trifida var. texana
Giant Ragweed [English]: Ambrosia trifida var. trifida
Giant Rain Lily [English]: Cooperia pedunculata
Giant Rata [English]: Metrosideros robusta ...
Variation in leaves from the giant ragweed illustrating positional effects. The lobed leaves come from the base of the plant, while the unlobed leaves come from the top of the plant.
Its pollen is small enough - between 20 to 50 microns in size - to float long distances without settling to the earth. Pictured here is giant ragweed, A. trifida which is an introduced weed that can grow six to eight feet tall.
 See also: Green, Black raspberry, Bitterweed, Black Ash, Striped Maple
  
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