Horrible keys

[D.R.Morse at UKC.AC.UK]

> >Any nominees for the prize of Most Useless Key Couplet Ever Published?
> >Here's my choice:
> >
> >Awns often deciduous ....
> >Awns much more often deciduous ....

There is a little cited paper by Metcalf which (I recall) contains
some similar examples, plus some advice on how to write `good' keys:

Metcalf, Z.P. (1954). The construction of keys.
    Systematic Zoology, 3:38-45.


David.
--
Dr David R. Morse,         Email: D.R.Morse at ukc.ac.uk
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