Electronic Flora of South Australia
Electronic Flora of South Australia
Census of SA Plants, Algae & Fungi
Identification tools

Acacias of South Australia

Acacia Terminology

To help with the terminology problem, there are some illustrations showing terminology used within this key. These show phyllode venation, glands on phyllodes and rachis, stipules, seedling and pinnate leaves, inflorescence types, the flower structure, fruit and seed morphology and longitudinal and transverse orientation of the seed with respect to the fruit.

Using a Dichotomous Key

In using a dichotomous key the user has to choose between two statements. The statement which best describes the plant being identified is chosen and the user then moves to the next choice of statements indicated by the number on the right hand side. This continues until an answer rather than a number is obtained on the right handn side.

An example

  • in Lead 1, choose between whether a plant has phyllodes or bipinnate leaves (see seedling and pinnate leaves). If the plant being identified (Cootamundra wattle) has bipinnate leaves then choose lead 136.
  • At Lead 136, the choice is between inflorescence types. Since the inflorescence is racemose or paniculate (see inflorescence types), choose lead 141.
  • At Lead 141 the choice is between whether the branches are prominently angled and winged or not. The branches are not prominently angled and winged and so the user is directed to lead 142.
  • At Lead 142 the choice is in the number of pinnae (see seedling and pinnate leaves). Two to six pairs of pinnae indicate that the plant is Acacia baileyana or the Cootamundra wattle.

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