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Category: Dichotomous Keys

  • Dichotomous Key

    • Cones present, non-flowering … plant 1
    • No cones, flowering
      • Complete flower… plant 2
      • B. Incomplete flower
        • Petal-like sepals… plant 3
        • No sepals, flowers in catkin… plant 4

  • Dichotomous Key

  • Dichotomous Key

    1A: Has needles; woody; cones present….Plant 1

    1B: No needles present….Go to 2

                  2A: Has flowers with petals….Go to 3

                  2B: Petals absent; incomplete flower….Plant 4

                                 3A: 4 petals, white; gamosepalous; inferior ovary….Plant 2

                                 3B: 6 petals, purple; polysepalous; superior ovary….Plant 3

  • Dichotomous Key

  • Shelby Green – Dichotomous Key

    Plant 1 – Fir Tree

    Plant 2 – Pine Tree

    Plant 3 – Birch Tree

    Plant 4 – Sweetgum Tree

  • Unit 2_Dichotomous Key_KLWillean

  • Dichotomous Key

    1. Thick aerial woody stem
    2. Herbaceous aerial stem
      1. Petals present
        1. Four white petals
        2. Five purple petals
      2. Petals lacking

  • Dichotomous Key

    By: Hattie Casserly

    A. Plants with flowers: Common yarrow Achillea millefolium L. (Asteraceae). Lavender, Lavandula angustifolia L. (Lamiaceae). Moonshine yarrow, Achillea clypeolata x taygetea’ A. (Asteraceae).

    B. Plants without flowers: Rosemary, Rosmarinus officinalis L. (Lamiaceae). Coast live Oak, Quercus agrifolia N. (Fagaceae). Ivy, Hedera helix L. (Araliaceae).

    2A. Flowering plants in the Asteraceae family: Achillea millefolium L. (Asteraceae), Achillea clypeolata x taygetea’ A. (Asteraceae)

    2B. Plants with veins: Quercus agrifolia N. (Fagaceae) + Ivy, Hedera helix L. (Araliaceae)

    3A. Flowering plants in the Lamiaceae family: Lavandula angustifolia L. (Lamiaceae)

    3B. Plants without veins: Rosmarinus officinalis L. (Lamiaceae)

    4A. Yellow flowers: Achillea clypeolata x taygetea’ A. (Asteraceae)

    4B. Plants with stipules: Ivy, Hedera helix L. (Araliaceae), Quercus agrifolia N. (Fagaceae)

    5A. Purple flowers: Lavandula angustifolia L. (Lamiaceae)

    5B. Plants without stipules: Rosmarinus officinalis L. (Lamiaceae)

    6A. White flowers: Achillea millefolium L. (Asteraceae)

    6B. Fruit bearing: Quercus agrifolia N. (Fagaceae)

  • Alicia’s Dichotomous Key

  • Dichotomous Key

    The following is my submission for a dichotomous key for the four plants imaged in Module 2:

    1. Plant has thick aerial woody stem ….       … Plant 1

    A’. Plant has herbaceous stem –> a,b

      1. Flower doesn’t (appear to) have petals…  …Plant 4
      2. Flower has petals–> i,ii
      1. Flower has white petals…                   …Plant 2
      2. Flower has purple petals…                 …Plant 3

      Included are also my notes on each plant. Any ? indicates uncertainty in claiming such:

      Dichotomous-Key-Activity_Plant-NotesDownload