A FLORA CHECKLIST

Pimpinella saxifraga L. Burnet-saxifrage Native
Pinguicula vulgaris L. Common Butterwort Native
Pinus contorta Douglas ex Loudon Lodgepole Pine Introduction
Pinus nigra ssp. laricio Maire
ssp. nigra J.F. Arnold
26
Corsican Pine
Austrian Pine
Introduction
Pinus pinaster Aiton Maritime Pine Introduction
Pinus strobus L. Weymouth Pine Introduction
Pinus sylvestris L. Scots Pine Neophyte
Pinus wallichiana A.B. Jacks. Bhutan Pine Introduction
Pisum sativum L. Garden Pea Casual
Plantago arenaria Waldst. & Kit. Branched Plantain Casual
Plantago coronopus L. Buck’s-horn Plantain Native
Plantago lanceolata L. Ribwort Plantain Native
Plantago major ssp. intermedia (Gilib.) Lange
ssp. major L.
Greater Plantain
Native
Plantago media L. Hoary Plantain Native
Platanthera chlorantha (Custer) Rchb. Greater Butterfly-orchid Native
Platanus x hispanica Mill. Ex Münchh. London Plane Introduction
Platycladus orientalis (L.) Franco Chinese Arbor-vitae Introcuction
Poa angustifolia L. Narrow-leaved Meadow-grass Native
Poa annua L. Annual Meadow-grass Native
Poa compressa L. Flattened Meadow-grass Native
Poa humilis Ehrh. Ex Hoffm. Spreading Meadow-grass Native
Poa infirma Kunth Early Meadow-grass Native
Poa nemoralis L. Wood Meadow-grass Native
Poa palustris L. Swamp Meadow-grass Casual
Poa pratensis L. Smooth Meadow-grass Native
Poa trivialis L. Rough Meadow-grass Native
Polemonium caeruleum L. Jacob’s-ladder Casual
Polygala serpyllifolia Hosé Heath Milkwort Native
Polygala vulgaris ssp. collina (Rchb.) Borbás
ssp. vulgaris L.
Common Milkwort
Native
Polygonatum multiflorum (L.) All. Solomon’s-seal Native
Polygonatum x hybridum Brűgger Garden Solomon's-seal Casual
Polygonum arenastrum Boreau Equal-leaved Knotgrass Archeophyte
Polygonum aviculare L. Knotgrass Native
Polygonum rurivagum Jord. Ex Boreau Cornfield Knotgrass Archeophyte
Polypodium interjectum Shivas Intermediate Polypody Native
Polypodium vulgare L. Polypody Native
Polypogon monspeliensis (L.) Desf. Annual Beard-grass Casual
Polypogon viridis (Gouan) Breistr. Water Bent Casual
Polystichum aculeatum (L.) Roth Hard Shield-fern Native
Polystichum lonchitis (L.) Roth Holly-fern Casual
Polystichum setiferum (Forssk.) T. Moore ex Woyn. Soft Shield-fern Native
Pontederia cordata L. Pickerel Weed Introduction
Populus alba L. White Poplar Introduction
Populus nigra ssp. betulifolia (Pursh) Dippel.
'Italica'
'Gigantea'
'Plantieriensis'
Black-poplar
Lombardy-poplar
Giant Lombardy-poplar
Plantier’s Poplar
Native
Introduction
Introduction
Introduction
Populus tremula L. Aspen Native