Latin phrase

[Richard Petit]

In a review published in 1842 there is a Latin phrase stated by the writer
to be a "Linnaean canon."  I would like to know where in Linnaeus' work it
might be found and also what it means.  The phrase is: "Nomina generica ab
uno vocabulo generica fracto altero integro composita, indigna sunt."

In context it appears to be a criticism of a genus-group name being formed
by the combination of two other genus-group names but a word for word
translation doesn't make much sense.

Google turns up a similar phrase in "Philosophia Botanica" but there is no
translation.

Any help will be appreciated.

Thanks.

dick p.
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Richard E. Petit
r.e.petit at att.net