While loading a data set from a BSBI local group via MapMate I had to add these in. No doubt there are a few synonyms but I could not find them.

Argynnis paphia f. valesina See;
http://www.ukbutterflies.co.uk/species.php?allimages&species=paphia

Anagallis arvensis subsp. arvensis f. azurea: Entered as Anagallis arvensis f. azurea. See;
http://www.arkive.org/scarlet-pimpernel/anagallis-arvensis/
http://data.gbif.org/species/16037951/
http://www.watsonia.org.uk/Wats6p292.pdf

anemanthele lessoniana
Kingdom:     Plantae
(unranked):     Angiosperms
(unranked):     Monocots
(unranked):     Commelinids
Order:     Poales
Family:     Poaceae
Subfamily:     Stipoideae
Genus:     Anemanthele
Species:     A. lessoniana
http://en.wikipedia.org/wiki/Anemanthele

Cardamine pratensis 'flore pleno'
Cultivar

Catabrosa aquatica subsp. aqatica probably Catabrosa aquatica L. [Sue England 2008 - http://www.plantlives.com/docs/C/Catabrosa_aquatica.pdf] but synonym is not present.

Elytrigia repens subsp. repens var. aristata (Döll) P.D.Sell.
http://en.wikipedia.org/wiki/Elytrigia_repens
Order:     Poales
Family:     Poaceae
Genus:     Elytrigia
Species:     E. repens

Elytrigia x acuta nothosubsp. obtusiuscula

Fumaria muralis subsp. boraei var. boraei

Hieracium agg.

Impatiens walleriana Hook.f. (syn. Impatiens sultanii Hook.f.)

Iris foetidissima var. citrina
cultivar?

Juncus effusus var. spiralis

Juncus tenuis Willd. var. tenuis

Lamiastrum galeobdolon ssp. montanum var. montanum
Lamiastrum galeobdolon ssp. montanum var. variegatum

ludwigia peploides (Kunth) P.H.Raven
http://en.wikipedia.org/wiki/Ludwigia_peploides
Order:     Myrtales
Family:     Onagraceae
Genus:     Ludwigia

Melampodium montanum Benth. - Handbook of Alien Species in Europe

Mimulus agg.

Narcissus 'Ceylon' [Var]
Narcissus 'Cheerfulness' [Var]
Narcissus 'Dutch Master' [Var]
Narcissus 'February Gold' [Var]
Narcissus 'February Silver' [Var]
Narcissus 'Fortune' [Var]
Narcissus 'Geranium'  [Var]
Narcissus 'Ice Follies'  [Var]
Narcissus 'Jake Snipe'  [Var]
Narcissus 'Jenny'  [Var]
Narcissus 'King Alfred'  [Var]
Narcissus 'St Keverne'  [Var]
Narcissus 'Telamonius Plenus'  [Var]
Narcissus 'Tete-a-Tete'  [Var]
Narcissus 'White Lady'  [Var]

Ophrys apifera var. chlorantha (Hegetschw.) K.Richt 1890

Pastinaca sativa subsp. sativa var. sylvestris

Pelargonium x hybridum

Populus nigra 'cultivars'

Ranunculus penicillatus subsp. var. vertumnus  [Var]  [Var]
Ranunculus penicillatus subsp. pseudofluitans var. pseudofluitans  [Var]

Rosa arvensis x canina  [SppHyb]
Rosa caesia subsp. glauca x Rosa canina (f x m)  [SppHyb]
Rosa canina x sherardii  [SppHyb]
# Order: Rosales
# Family: Rosaceae
# Genus: Rosa
http://data.gbif.org/species/13689601/
Rosa stylosa x canina [SppHyb]

Salicornia agg.  [FamAgg]

Sutera cordata [Spp]
http://en.wikipedia.org/wiki/Sutera_cordata
Order:     Lamiales
Family:     Scrophulariaceae
Tribe:     Limoselleae
Genus:     Sutera

Taraxacum microspecies [FamAgg] - ?

Verbascum lychnitis var. lychnitis  [Var]

Tony