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Philadelphus

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Philadelphus

by AndyAmphlett » Tue Jul 14, 2020 11:52 am

Tom,

Queries using, and the map for, the genus Philadelphus, do not return / plot records of Philadelphus group 'Virginalis Group' or of Philadelphus group 'Lemoinei Group'.

Both taxa are listed under the genus name - https://database.bsbi.org/search.php#re ... 10f79009a5 - so I am puzzled why queries don't return them, and records are missing from maps.

Thanks,

Andy.
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Re: Philadelphus

by admin » Tue Jul 14, 2020 12:07 pm

Hi Andy,

Thanks. I'll investigate this.

There are various short-cut optimisations applied to searches to avoid inefficient traversal of deep taxon hierarchies. It sounds as though the optimisation for a genus-level search is failing to consider taxa at 'group' level.

A search that explicitly includes the overlooked clades works correctly - but is obviously not a proper solution:

https://database.bsbi.org/search.php#re ... 739074328a
Tom Humphrey
Database Officer, Botanical Society of Britain and Ireland (BSBI)
c/o Centre for Ecology and Hydrology,Maclean Building, Crowmarsh Gifford, Wallingford, Oxon, OX10 8BB, UK.
tom.humphrey@bsbi.org
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