| Cynosurus echinatus | GB, VC113 Channel Islands, Guernsey | Norman George Hadden | William Barclay Harold Stuart Thompson | 30/8/1919 | BIRM |
| Rosa rubiginosa | GB, VC88 Mid Perthshire, Caputh | William Barclay | Watson Botanical Exchange Club | 12/9/1918 | SLBI |
+ | Phyteuma spicatum | GB, VC88 Mid Perthshire, Methven Castle | William Barclay | | 7/7/1918 | PTH |
+ | Gentianella amarella | GB, VC89 East Perthshire, Loch Moraig | William Barclay | | 25/8/1917 | PTH |
+ | Eleocharis acicularis | GB, VC88 Mid Perthshire, River Almond | William Barclay | | 9/8/1917 | PTH |
+ | Lepidium sativum | GB, VC88 Mid Perthshire, River Almond | William Barclay | | 9/8/1917 | PTH |
+ | Carex curta | GB, VC88 Mid Perthshire, Methven Moss | William Barclay | | 7/7/1917 | PTH |
+ | Carex magellanica | GB, VC88 Mid Perthshire, Methven Moss | William Barclay | | 7/7/1917 | PTH |
| Potamogeton gramineus | GB, VC88 Mid Perthshire, Blair Atholl,Loch Moraig | William Barclay | William Barclay | 14/8/1916 | E |
| Potamogeton alpinus x crispus = P. x olivaceus | GB, VC88 Mid Perthshire, River Earn above Dalreoch Bridge | William Barclay | Watson Botanical Exchange Club Harold Stuart Thompson William Barclay | 11/8/1916 | BIRM |
+ | Potamogeton alpinus x crispus = P. x olivaceus | GB, VC88 Mid Perthshire, River Earn above Dalreoch Bridge | William Barclay | | 11/8/1916 | BIRM |
+ | Oxytropis halleri | GB, VC89 East Perthshire, Ben Vrackie | William Barclay | | 5/8/1916 | PTH |
| Cynosurus echinatus | GB, VC88 Mid Perthshire, South Inch | William Barclay | Watson Botanical Exchange Club William Barclay | 27/6/1916 | BIRM |
+ | Sisymbrium pannonicum | GB, VC88 Mid Perthshire, Perth | William Barclay | | 1/10/1915 | PTH |
+ | Sisymbrium pannonicum | GB, VC88 Mid Perthshire, Perth | William Barclay | | 1/10/1915 | PTH |
+ | Aster novi-belgii | GB, VC88 Mid Perthshire, Dalreoch Bridge | William Barclay | | 22/9/1915 | PTH |
+ | Fumaria muralis subsp. boraei | GB, VC88 Mid Perthshire, Dalreoch Bridge | William Barclay | | 22/9/1915 | PTH |
| Potamogeton alpinus x crispus = P. x olivaceus | GB, VC88 Mid Perthshire, Dalreoch Bridge | William Barclay | London Natural History Society | 22/9/1915 | SLBI |
+ | Rumex hydrolapathum | GB, VC88 Mid Perthshire, Aberuthven | William Barclay | | 22/9/1915 | PTH |
+ | Rumex hydrolapathum | GB, VC88 Mid Perthshire, Aberuthven | William Barclay | | 22/9/1915 | PTH |
+ | Potamogeton alpinus x crispus = P. x olivaceus | GB, VC88 Mid Perthshire, Dalreoch Bridge | William Barclay | | 13/9/1915 | PTH |
+ | Potamogeton alpinus x crispus = P. x olivaceus | GB, VC88 Mid Perthshire, River Earn above Dalreoch Bridge | William Barclay | | 13/9/1915 | BIRM |
| Potamogeton alpinus x crispus = P. x olivaceus | GB, VC88 Mid Perthshire, River Earn above Dalreoch Bridge | James Robert Matthews William Barclay | Watson Botanical Exchange Club Harold Stuart Thompson William Barclay | 13/9/1915 | BIRM |
+ | Potamogeton crispus | GB, VC88 Mid Perthshire, Dalreoch Bridge | William Barclay | | 13/9/1915 | PTH |
+ | Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC88 Mid Perthshire, Dalreoch Bridge | William Barclay | | 13/9/1915 | PTH |
| Potamogeton lucens x perfoliatus = P. x salicifolius | GB, VC88 Mid Perthshire, Forteviot Bridge | William Barclay | Watson Botanical Exchange Club Charles Bailey William Barclay | 13/9/1915 | MANCH |
+ | Potamogeton perfoliatus | GB, VC88 Mid Perthshire, Dalreoch Bridge | William Barclay | | 13/9/1915 | PTH |
+ | Anthemis arvensis | GB, VC88 Mid Perthshire, Forgandenny | William Barclay | | 8/9/1915 | PTH |
+ | Geranium pyrenaicum | GB, VC88 Mid Perthshire, Glenearn | William Barclay | | 8/9/1915 | PTH |
+ | Mentha | GB, VC88 Mid Perthshire, Glenearn | William Barclay | | 8/9/1915 | PTH |
+ | Potentilla anglica | GB, VC89 East Perthshire, River Tay | William Barclay | | 17/7/1915 | PTH |
+ | Carex pendula | GB, VC89 East Perthshire, Glen Tilt | William Barclay | | 3/7/1915 | PTH |
+ | Nasturtium sylvestre | GB, VC88 Mid Perthshire, Methven | William Barclay | | 7/1915 | PTH |
+ | Ceratophyllum demersum | GB, VC88 Mid Perthshire, Kirkton | William Barclay | | 25/8/1914 | PTH |
+ | Potamogeton obtusifolius | GB, VC88 Mid Perthshire, Kirkton | William Barclay | | 25/8/1914 | PTH |
+ | Rosa mollis | GB, VC88 Mid Perthshire, Kirkton | William Barclay | | 20/8/1914 | PTH |
| Potamogeton obtusifolius | GB, VC89 East Perthshire, Marlee Loch | Charles Geekie Matthew William Barclay | Arthur Bennett | 8/1914 | MANCH |
+ | Spergularia rubra | GB, VC89 East Perthshire, Ballinluig | William Barclay | | 20/7/1914 | PTH |
+ | Briza media | GB, VC88 Mid Perthshire, Tulach Hill | William Barclay | | 2/8/1913 | PTH |
+ | Helictotrichon pratense | GB, VC88 Mid Perthshire, Tulach Hill | William Barclay | | 2/8/1913 | PTH |