These images of 21 hypothetical plants were created by Lynn Clark (Iowa State University) and Brandon Holt and can be used in a variety of exercises.
Lynn Clark says:
There aren’t really formal instructions, but one can assign any number of attributes to the 21 taxa, such as chromosome number, ploidy level, anatomical structures, floral scents, DNA sequences, etc. to create problems for the students to do. I have the students do a dichotomous key exercise with a subset of taxa, and the speciation exercise (included in download links below) is another one we use regularly. Note that taxon 21 is the same as 16 but sterile.
Credit and copyright: Text © Lynn Clark; Images © Lynn Clark and Brandon Holt; inspiration: Herb Wagner.
Download the files here (click on the links) :
Dendrogrammaceae Speciation Worksheet: Dendrogrammaceae speciation worksheet (502 downloads)
Dendrogrammaceae Xanthoanthe Speciation Example: Dendrogrammaceae Xanthoanthe Speciation example (348 downloads)
Figs. 1-4 (jpg): Dendrogrammaceae Figs. 1-4 (jpg) (352 downloads)
Figs. 5-8 (jpg): Dendrogrammaceae Figs. 5-8 (228 downloads)
Figs. 9-12 (jpg): Dendrogrammaceae Figs. 9-12 (205 downloads)
Figs. 13-16 (jpg): Dendrogrammaceae Figs. 13-16 (210 downloads)
Figs. 17-20 (jpg): Dendrogrammaceae Figs. 17-20 (188 downloads)
Figs. 21 plus outgroup (OG) (jpg): Dendrogrammaceae Figs. 21 plus OG (252 downloads)