Plant Genera placement in Family

[Regis Courtecuisse]

>On 28 March, =46rancesco Porcelli wrote:
>
>>I am not able to verify many of these references because there are
>>historical ones and/or only parts of the host plants was collected.
>>In order to use the bulk of these data I need to know if a lot of
>>plants species were moved out of a Genus into another during the last
>>30 years.

>The quick answer is that it all depends on the genus.  Some have
>stayed virtually unaltered in their delimitation since their
>establishment (under our current nomenclature) by Linnaeus in 1753,
>but others have changed dramatically (e.g. in the ferns and grasses).
>And, of course, enormous numbers of new genera and species have been
>described over the years in botany as in entomology.
>
>You do not indicate if this is a regionally based study or a
>world-wide one;
...>If world-wide, you have more problems, there is no electronic (or
>other) list of current accepted names with or without synonyms of
>any plant group.
>
>John McNeill

As an information which could be of some use to botanists and others (for
example entomologists working on relations between their favorites and
plants), I have seen recently a publicity (Koeltz) announcement for a "World
checklist of seed plants - Comprehensive plant list", compiled by R.Govaerts
and planned to be published in 26 volumes (!!). The volume 1 covers the
letter "A" and will comprise 84.329 plant taxa (species and lower ranks).
Each volume will be organized in two parts : the species (correct names) and
the synonyms (respectively 488 pp. + 536 pp for the letter A).
Sorry for publicity but I am not involved at all in this affair (I am a
universitary mycologist -taxonomy and conservation). But this will probably
help some of the Taxacomers.
Regards to all of you !
                Regis