Ononis reclinata
Small Restharrow
Ononis repens
Common Restharrow
Ononis spinosa
Spiny Restharrow
Ophrys apifera
Bee Orchid
Orchis mascula
Early-purple Orchid
Origanum vulgare
Wild Marjoram
Ornithopus perpusillus
Bird's-foot
Orobanche hederae
Ivy Broomrape
Orobanche minor
Common Broomrape
Orobanche rapum-genistae
Greater Broomrape
Oxalis articulata
Pink-sorrel
Pedicularis palustris
Marsh Lousewort
Pedicularis sylvatica
Lousewort
Penstemon sp.
Penstemon
Persicaria amphibia
Amphibious Bistort
Persicaria hydropiper
Water-pepper
Persicaria maculosa
Redshank
Persicaria minor
Small Water-pepper
Persicaria mitis
Tasteless Water-pepper
Petasites hybridus
Butterbur
Petasites pyrenaicus
Winter Heliotrope
Petrorhagia prolifera
Proliferous Pink
Pleione formosana
Pleione
Pleroma heteromallum
Silverleafed Princess Flower