Tuesday 19 November 2013

Fern Dichotomous key


Ferns Dichotomous Key

 
A dichotomous key is a modelling method used to categorise species based on their distinguishable factors.
 

1.       a. Simple leaf (go to 2)

b. Compound Leaf (go to 5)

 

 

2.       a. Determinate leaf (go to 3)

b. Indeterminate leaf ………………………………………………………………….Platycerium Ridleyi Christ

 

 
      3.       a. Homophyllus (go to 4)

b. Heterophyllus ………………………………………………………………………………Bolbitis Appendiculata

 

 

4.       a. Climbing …………………………………………………………………………………………………………Velvet Fern

b. Non-climbing ………………………………………………………………………………………………Birds Nest Fern

 

 

    5.       a. Homophyllus (go to 6)

b. Heterophyllus …………………………………………………………………………………….Dragons Scale Fern

 

 

6.       a. Non-climbing (go to 7)

b. Climbing ………………………………………………………………………………………………………Climbing Fern

 

 

7.       a. Pinnate (go to 8)

b. Bi-pinnate (go to 9)

 

 

8.       a. Determinate Leaf …………………………………………………………………………………Maidens Hair Fern

b. Indeterminate Leaf …………………………………………………………………………………………Ladder Fern

 

 

9.       a. Marginal arrangement of Sori …………………………………………………………..…Rabbits Foot Fern

b. Non-marginal arrangement of Sori …………………………………………………………………….Tree Fern




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