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[Roger Horton]

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Specimen #288154

Taxon:	Woodsiaceae: Gymnocarpium dryopteris (L.) Newman ("Oak Fern") named by John Game & Andrew S Doran 8/2007 UC
Other name:	Polypodium dryopteris named by Samuel David Titmas 8/1877 GOD
Collected by:	Rev Samuel David Titmas
Collection date:	8/1877
Locality:	Great Britain, VC48 Merionethshire, Cader Idris, Llyn Cau, SH7112
ex herb:	Rev Samuel David Titmas
Institution:	Charterhouse School Herbarium (GOD)
Accession number:	66
Image:
phenologyField:	FR
notes:	Presented by L. Marshall Esq. L. G. 1640 Filices

Documented by andrew doran on 3^rd February 2010.

Checked by mossysal

Edit history

date	user	change
03/02/2010	andrew doran	Deleted determination (orig): Polypodium dryopteris
03/02/2010	andrew doran	Added determination (orig): Polypodium dryopteris on 8/1877
03/02/2010	andrew doran	Added determination (orig): Gymnocarpium dryopteris on 8/2007
03/02/2010	andrew doran	Added note: Presented by L. Marshall Esq. L. G. 1640 Filices
03/02/2010	andrew doran	Deleted locality:
03/02/2010	andrew doran	Added locality: GB VC48 Cader Idris, Llyn Caw Cader Idris
03/02/2010	andrew doran	Deleted determiner: S D Titmus
03/02/2010	andrew doran	Added collector: S D Titmus
03/02/2010	andrew doran	Added determiner: Andrew S Doran
03/02/2010	andrew doran	Added determiner: John Game
03/02/2010	andrew doran	Added determiner: S D Titmus
03/02/2010	andrew doran	Added provenance: exherb S D Titmus
03/02/2010	andrew doran	Added collection date: 8/1877
03/02/2010	andrew doran	Replaced number:
03/02/2010	andrew doran	Added attribute phenologyField: FR
03/02/2010	andrew doran	Added determiner's note: “Acer campestre v. hebecarpum fruit pubescent - the typical form”
03/02/2010	andrew doran	Added determiner's note: Var uniflora M & K
03/02/2010	mossysal	Deleted locality: GB VC48 Cader Idris, Llyn Caw Cader Idris
03/02/2010	mossysal	Added locality: GB VC48 Cader Idris, Llyn Cau
03/02/2010	mossysal	Deleted determiner's note: UC
03/02/2010	mossysal	Deleted determiner's note: GOD
03/02/2010	mossysal	Added determiner's note: Medicago varia [M.falcata X M. sativa; M. sylvestris Fries]
03/02/2010	mossysal	Added determiner's note: "This seems true pumilum" [sic]
21/01/2014	xmhcman	Deleted determination (orig): Gymnocarpium dryopteris on 8/2007
21/01/2014	xmhcman	Deleted determination (orig): Polypodium dryopteris on 8/1877
21/01/2014	xmhcman	Added determination (orig): Gymnocarpium dryopteris on 8/2007
21/01/2014	xmhcman	Added determination (orig): Polypodium dryopteris on 8/1877
21/01/2014	xmhcman	Deleted determiner: S D Titmus
21/01/2014	xmhcman	Deleted determiner: John Game
21/01/2014	xmhcman	Deleted determiner: Andrew S Doran
21/01/2014	xmhcman	Added determiner: John Game
21/01/2014	xmhcman	Added determiner: Andrew S Doran
21/01/2014	xmhcman	Added determiner: S D Titmus
21/01/2014	xmhcman	Added determiner's note: UC
21/01/2014	xmhcman	Added determiner's note: GOD
21/09/2015	chrisu	Deleted locality: GB VC48 Cader Idris, Llyn Cau
21/09/2015	chrisu	Added locality: GB VC48 Cader Idris, Llyn Cau SH7112 (place)
21/09/2015	chrisu	Deleted determiner's note: GOD
21/09/2015	chrisu	Deleted determiner's note: UC
21/09/2015	chrisu	Added determiner's note: GOD
21/09/2015	chrisu	Added determiner's note: UC

N.B. reporting of the edit history is currently fairly unclear and misleading. Most edits made to specimens appear as a pair of 'add' and 'delete' entries, which may not be together in the list. There are also often 'minor' edits, which are made automatically (rather than due to user activity), for example to merge synonym names.

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User comments about this sheet

xmhcman wrote

Am I being too bold in changing the preferred taxon here from Polypodium dryopteris to Gymnocarpium dryopteris (det. Doran and Game; Oak Fern)? Nothing else in the database is listed under P. dryopteris. I am also troubled by what appears on the main page for this sheet (288154) which includes determiner's notes referring to Acer campestre and Medicago varia, details not apparent whilst editing!

[Tom Humphrey]

Hi Roger,

I think the spurious edit history comments (with the nonsensical determiners comments, e.g. "Acer campestre v. hebecarpum") are due to bug with the way that edit history is maintained leading to some id collisions - I thought I'd got to the bottom of this but, given this example, it appears not

Although I agree with you that the sheet should be Gymnocarpium dryopteris rather than P. dryopteris I'm not sure that editing to correct this is worthwhile (and one could argue that a determination attributed to a named person should reflect exactly the name they used). Instead, the whole taxon list used by herb@home needs to be sorted out and brought up-to-date - something which is planned, but I don't have a timetable for yet (beyond saying 'this year').

As a temporary stop-gap I've updated the database to set P. dryopteris as a synonym of G. dryopteris.