Hoyt Arboretum, Portland, Oregon, USA
Hoyt Arboretum, Portland, Oregon, USA
Hoyt Arboretum, Portland, Oregon, USA
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Found
P: 345 names
Paeonia delavayi
• Paeoniaceae • Tree Peony
Panicum capillare subsp. capillare
• Poaceae
Panicum miliaceum subsp. miliaceum
• Poaceae
Parahebe olsenii
• Scrophulariaceae
Parentucellia viscosa
• Orobanchaceae • yellow glandweed, parentucellia
Parmena spectabilis (syn.)
• Rosaceae • Salmonberry, Salmonberry
Parrotia persica
• Hamamelidaceae • Persian Ironwood
Parrotia persica 'Pendula'
• Hamamelidaceae
Parrotiopsis jacquemontiana
• Hamamelidaceae
Parthenocissus quinquefolia
• Vitaceae • Virginia creeper
Paspalum distichum
• Poaceae
Paulownia kawakamii
• Paulowniaceae
Paulownia tomentosa
• Paulowniaceae • princess tree, royal paulownia, empress tree
Pedicularis racemosa
• Orobanchaceae • white sickletop lousewort, parrot's-beak, sickletop lousewort
Peltigera praetextata
• Peltigeraceae
Penstemon barrettiae
• Plantaginaceae
Penstemon davidsonii var. menziesii 'Pink'
• Plantaginaceae
Penstemon davidsonii var. menziesii 'Tolmiei Peak'
• Plantaginaceae
Penstemon eatonii
• Plantaginaceae
Penstemon euglaucus
• Plantaginaceae • Glaucous penstemon
Penstemon fruticosus
• Plantaginaceae • Shrubby penstemon
Penstemon newberryi var. berryi
• Plantaginaceae
Penstemon ovatus
• Plantaginaceae • ovate penstemon
Penstemon procerus var. formosus
• Plantaginaceae
Penstemon richardsonii
• Plantaginaceae • Richardson's penstemon
Penstemon rydbergii
• Plantaginaceae • meadow beardtongue, Rydberg's penstemon
Penstemon speciosus
• Plantaginaceae
Penstemon sphyb f davidsonii × rupicola 'Dragontail'
• Plantaginaceae
Penstemon strictus
• Plantaginaceae
Penstemon subserratus
• Plantaginaceae • Fine-toothed penstemon
Pentaglottis sempervirens
• Boraginaceae • evergreen bugloss
Pernettya poeppigii
• Ericaceae
Persea borbonia
• Lauraceae • Red Bay
Persicaria lapathifolia
• Polygonaceae • curlytop knotweed
Petasites frigidus
• Asteraceae
Petasites frigidus var. palmatus
• Asteraceae • arctic sweet coltsfoot, arctic sweet-colt's-foot
Petasites japonicus
• Asteraceae • Japanese sweet coltsfoot
Petrophytum hendersonii
• Rosaceae
Phacelia nemoralis
• Boraginaceae • shade phacelia, Oregon phacelia
Phalaris arundinacea
• Poaceae
Phellodendron amurense
• Rutaceae • Amur Cork Tree
Philadelphus calvescens
• Hydrangeaceae
Philadelphus lewisii
• Hydrangeaceae • Mock Orange, Lewis' mock orange
Philadelphus madrensis
• Hydrangeaceae
Philadelphus microphyllus
• Hydrangeaceae
Philadelphus pekinensis
• Hydrangeaceae
Philadelphus sericanthus var. kulingensis
• Hydrangeaceae
Philadelphus sp.
• Hydrangeaceae
Philadelphus species
• Hydrangeaceae
Philadelphus tomentosus
• Hydrangeaceae
Phillyrea angustifolia
• Oleaceae
Phillyrea angustifolia 'Narrow leaf form' (syn.)
• Oleaceae
Phillyrea latifolia
• Oleaceae
Phleum pratense
• Poaceae
Phlox 'Ochsen Blut'
• Polemoniaceae
Phormium colensoi
• Hemerocallidaceae • Mountain Flax
Phormium sp.
• Hemerocallidaceae
Phormium tenax 'Amazing Red'
• Hemerocallidaceae • Flax Lily
Photinia serratifolia
• Rosaceae
Photinia villosa
• Rosaceae • Oriental Photinia
Photinia villosa var. laevis
• Rosaceae • Smooth Oriental Photinia
Phragmites australis
• Poaceae
Phyllocladus alpinus
• Podocarpaceae • alpine celery tree
Phyllostachys atrovaginata
• Poaceae Subfamily Bambusoideae
Phyllostachys aurea 'Holochrysa'
• Poaceae Subfamily Bambusoideae
Phyllostachys bambusoides
• Poaceae Subfamily Bambusoideae
Phyllostachys dulcis
• Poaceae Subfamily Bambusoideae • Sweetshoot Bamboo
Phyllostachys edulis 'Jaquith'
• Poaceae Subfamily Bambusoideae • Moso
Phyllostachys heteroclada
• Poaceae Subfamily Bambusoideae
Phyllostachys mannii
• Poaceae Subfamily Bambusoideae
Phyllostachys nigra 'Bory'
• Poaceae Subfamily Bambusoideae
Phyllostachys parvifolia
• Poaceae Subfamily Bambusoideae
Phyllostachys platyglossa
• Poaceae Subfamily Bambusoideae
Phyllostachys vivax
• Poaceae Subfamily Bambusoideae
Phyllostachys vivax 'Huangwenzhu'
• Poaceae Subfamily Bambusoideae • Yellow Groove Vivax
Phyllostachys vivax 'Huangwenzhu Inversa'
• Poaceae Subfamily Bambusoideae • Kimmei Vivax
Physocarpus capitatus
• Rosaceae • Pacific ninebark
Physocarpus malvaceus
• Rosaceae • mallow ninebark
Phytolacca americana
• Phytolaccaceae • pokeweed, inkberry, pigeonberry, pokeberry, common pokeweed, phytolaque d'Amérique, poke, American pokeweed
Picea abies
• Pinaceae • Norway Spruce
Picea abies 'Gold Drift'
• Pinaceae
Picea abies 'Hildburghausen'
• Pinaceae
Picea alcoquiana
• Pinaceae • Alcock Spruce
Picea brachytyla
• Pinaceae • Sargent Spruce
Picea breweriana
• Pinaceae • Brewer's Weeping Spruce
Picea chihuahuana
• Pinaceae
Picea crassifolia
• Pinaceae • Qinghai spruce
Picea engelmannii
• Pinaceae • Engelmann Spruce
Picea engelmannii 'Stanley Mountain'
• Pinaceae
Picea glauca
• Pinaceae • White Spruce
Picea glauca × albertina
• Pinaceae • Alberta White Spruce
Picea glauca 'Conica'
• Pinaceae • Dwarf Alberta Spruce
Picea glauca 'Daisy's White'
• Pinaceae
Picea glauca 'Densata'
• Pinaceae • Black Hills Spruce
Picea glauca 'Pendula'
• Pinaceae • Weeping White Spruce
Picea jezoensis
• Pinaceae • Yezo Spruce
Picea likiangensis
• Pinaceae • Lijiang Spruce
Picea mariana
• Pinaceae • Black Spruce
Picea omorika
• Pinaceae • Serbian Spruce
Picea omorika 'Pendula Bruns'
• Pinaceae • bruns weeping Serbian spruce
Picea orientalis
• Pinaceae • Oriental Spruce
Picea orientalis 'Silver Seedling'
• Pinaceae
Picea orientalis 'Spring Frost'
• Pinaceae
Picea orientalis 'Unknown'
• Pinaceae
Picea polita
• Pinaceae • Tiger-tail Spruce
Picea pungens
• Pinaceae • Colorado Blue Spruce
Picea pungens 'Donna's Rainbow'
• Pinaceae
Picea pungens 'Glauca Globosa'
• Pinaceae
Picea pungens 'Iseli's Fastigiata'
• Pinaceae
Picea pungens 'The Blues'
• Pinaceae
Picea pungens 'Waldbrunn'
• Pinaceae
Picea rubens
• Pinaceae • Red Spruce
Picea sitchensis
• Pinaceae • Sitka Spruce
Picea sitchensis 'Bentham's Sunlight'
• Pinaceae • golden spruce
Picea smithiana
• Pinaceae • Himalayan Spruce
Picea wilsonii
• Pinaceae • Wilson's spruce
Pieris japonica 'Katsura'
• Ericaceae
Pinus × rhaetica
• Pinaceae • Diginea Pine
Pinus aristata
• Pinaceae • Rocky Mtn. Bristlecone Pine
Pinus armandii
• Pinaceae • Chinese White Pine
Pinus attenuata
• Pinaceae • Knobcone Pine
Pinus ayacahuite
• Pinaceae • Mexican White Pine
Pinus balfouriana
• Pinaceae
Pinus banksiana
• Pinaceae • Jack Pine
Pinus bungeana 'Silver Ghost'
• Pinaceae
Pinus cembra
• Pinaceae • Swiss Stone Pine
Pinus clausa
• Pinaceae • sand pine
Pinus contorta
• Pinaceae • lodgepole pine, scrub pine, shore pine, tamarack pine
Pinus contorta 'Spaan's Dwarf'
• Pinaceae
Pinus contorta subsp. contorta
• Pinaceae • shore pine
Pinus contorta subsp. latifolia
• Pinaceae
Pinus contorta var. latifolia
• Pinaceae • Lodgepole Pine
Pinus contorta var. latifolia 'Chief Joseph'
• Pinaceae • golden lodgepole pine
Pinus contorta var. latifolia 'Taylor's Sunburst'
• Pinaceae
Pinus coulteri
• Pinaceae • Big Cone Pine, Coulter Pine
Pinus densiflora
• Pinaceae • tanyosho pine, Japanese red pine, Japanese umbrella pine
Pinus densiflora 'Burke's Red Variegated'
• Pinaceae
Pinus densiflora 'Umbraculifera'
• Pinaceae • Tanyosho Pine
Pinus densiflora 'Umbraculifera Compacta'
• Pinaceae
Pinus edulis
• Pinaceae • two-needle pinyon pine, pinyon pine
Pinus engelmannii
• Pinaceae • Apache Pine
Pinus fenzeliana
• Pinaceae
Pinus gerardiana
• Pinaceae • Chilgoza Pine
Pinus greggii
• Pinaceae
Pinus halepensis
• Pinaceae • Aleppo pine
Pinus heldreichii
• Pinaceae • Bosnian Pine
Pinus heldreichii 'Satellite'
• Pinaceae
Pinus jeffreyi
• Pinaceae • Jeffrey Pine
Pinus koraiensis
• Pinaceae • Korean Pine
Pinus lambertiana
• Pinaceae • Sugar Pine
Pinus longaeva
• Pinaceae • Great Basin Bristlecone Pine
Pinus monophylla
• Pinaceae • Single-leaf Pinyon Pine
Pinus monticola
• Pinaceae • Western White Pine
Pinus mugo
• Pinaceae • Mugo Pine
Pinus mugo 'Carstens'
• Pinaceae
Pinus mugo 'Mops'
• Pinaceae • dwarf mountain pine
Pinus mugo var. pumilio
• Pinaceae • Dwarf Mugo Pine
Pinus muricata
• Pinaceae • Bishop Pine
Pinus nigra
• Pinaceae • Austrian pine, Australian pine, European black pine
Pinus nigra var. pallasiana
• Pinaceae • Crimean Pine
Pinus parviflora
• Pinaceae • Japanese White Pine
Pinus patula
• Pinaceae • Jelecote pine
Pinus peuce
• Pinaceae • Macedonian pine
Pinus pinaster
• Pinaceae • Maritime Pine
Pinus pinaster subsp. escarena
• Pinaceae
Pinus pinea
• Pinaceae • Italian Stone Pine
Pinus ponderosa
• Pinaceae • Ponderosa Pine
Pinus ponderosa subsp. scopulorum (syn.)
• Pinaceae • Rocky. Mtn. Yellow Pine
Pinus ponderosa 'The Sphinx'
• Pinaceae
Pinus ponderosa var. benthamiana
• Pinaceae
Pinus ponderosa var. ponderosa
• Pinaceae • Rocky. Mtn. Yellow Pine
Pinus radiata
• Pinaceae • Monterey pine
Pinus resinosa
• Pinaceae • Red Pine
Pinus rigida
• Pinaceae • Pitch Pine
Pinus shenkanensis
• Pinaceae
Pinus strobiformis
• Pinaceae • Southwestern white pine
Pinus strobus
• Pinaceae • Eastern White Pine
Pinus strobus 'Fastigiata'
• Pinaceae
Pinus strobus 'Nana'
• Pinaceae
Pinus strobus 'Pendula'
• Pinaceae
Pinus sylvestris
• Pinaceae • Scots Pine
Pinus sylvestris 'Fastigiata'
• Pinaceae
Pinus tabuliformis
• Pinaceae • Chinese red pine
Pinus taeda
• Pinaceae • loblolly pine
Pinus taiwanensis
• Pinaceae • Taiwan pine
Pinus thunbergii
• Pinaceae • Japanese Black Pine
Pinus uncinata 'Paradekissen'
• Pinaceae
Pinus uncinata subsp. uncinata
• Pinaceae • Mountain Pine
Pinus veitchii
• Pinaceae • veitch Mexican pine
Pinus wallichiana
• Pinaceae • Himalayan Pine
Pistacia chinensis
• Anacardiaceae • Chinese Pistache
Pittosporum
• Pittosporaceae
Pittosporum crassicaule
• Pittosporaceae
Pittosporum eugenioides
• Pittosporaceae
Pittosporum illicioides
• Pittosporaceae
Pittosporum napaulense
• Pittosporaceae
Pittosporum parvilimbum
• Pittosporaceae
Pittosporum tenuifolium 'Irene Patterson'
• Pittosporaceae
Pittosporum tenuifolium 'James Sterling'
• Pittosporaceae
Pittosporum tenuifolium 'Nana'
• Pittosporaceae
Pittosporum tenuifolium 'Theodore'
• Pittosporaceae
Pittosporum tenuifolium 'Tiny Tim'
• Pittosporaceae
Pittosporum tobira 'Tall n` Tough'
• Pittosporaceae • Japanese mock orange
Plagianthus divaricatus
• Malvaceae
Plagianthus regius
• Malvaceae
Platanthera transversa
• Orchidaceae • flat-spurred piperia, Suksdorf's piperia
Platanus acerifolia
• Platanaceae • London Plane Tree
Platanus occidentalis
• Platanaceae • sycamore, American sycamore
Platanus racemosa
• Platanaceae • California sycamore
Platycarya strobilacea
• Juglandaceae • platycarya, broad nut
Platycladus orientalis
• Cupressaceae • Oriental Arborvitae
Pleioblastus distichus
• Poaceae
Poa annua
• Poaceae
Poa bulbosa
• Poaceae
Poa compressa
• Poaceae
Poa cusickii
• Poaceae
Poa howellii
• Poaceae
Poa palustris
• Poaceae • fowl blue grass, fowl bluegrass
Poa pratensis
• Poaceae
Poa secunda
• Poaceae
Poa trivialis
• Poaceae
Podocarpus acutifolius
• Podocarpaceae
Podocarpus alpinus
• Podocarpaceae • Tasmanian Podocarp
Podocarpus alpinus 'Blue Gem'
• Podocarpaceae
Podocarpus chinensis
• Podocarpaceae
Podocarpus chingianus
• Podocarpaceae
Podocarpus lawrencei 'Purple King'
• Podocarpaceae
Podocarpus macrophyllus
• Podocarpaceae • Bigleaf Podocarp
Podocarpus macrophyllus 'Maki'
• Podocarpaceae
Podocarpus nivalis
• Podocarpaceae • Alpine Totara
Podocarpus salignus
• Podocarpaceae • Willowleaf Podocarp
Podocarpus totara 'Pendulus'
• Podocarpaceae
Podophyllum peltatum
• Berberidaceae • mayapple
Poliothyrsis sinensis
• Salicaceae
Polygala chamaebuxus 'Rhodoptera'
• Polygalaceae
Polylepis tomentella
• Rosaceae
Polypogon monspeliensis
• Poaceae
Polyspora longicarpa
• Theaceae • full moon polyspora
Polyspora speciosa
• Theaceae
Polystichum munitum
• Dryopteridaceae • sword fern, western swordfern
Polystichum retrosopaleaceum
• Dryopteridaceae
Poncirus trifoliata (syn.)
• Rutaceae • Trifoliate Orange, Trifoliate Orange
Poncirus trifoliata 'Flying Dragon' (syn.)
• Rutaceae
Populus alba
• Salicaceae • White Poplar
Populus deltoides
• Salicaceae • Eastern Cottonwood
Populus nigra 'Italica'
• Salicaceae • Lombardy Poplar
Populus tremuloides
• Salicaceae • quaking aspen
Populus trichocarpa
• Salicaceae • Black Cottonwood
Potentilla anserina subsp. pacifica
• Rosaceae • silverweed cinquefoil
Potentilla fruticosa (syn.)
• Rosaceae • shrubby cinquefoil, shrubby cinquefoil, bush cinquefoil, widdy, golden hardhack
Potentilla fruticosa 'Cascade Cushion'
• Rosaceae
Potentilla fruticosa 'Moonlight'
• Rosaceae
Potentilla gracilis
• Rosaceae
Potentilla recta
• Rosaceae
Primula veris
• Primulaceae
Prosartes hookeri
• Liliaceae • Hooker's Fairy Bells, drops-of-gold
Prostanthera 'Badja Peak'
• Lamiaceae
Prunella vulgaris subsp. vulgaris
• Lamiaceae • heal all, healall, selfheal, common selfheal
Prunus
• Rosaceae
Prunus avium
• Rosaceae • sweet cherry
Prunus cerasifera
• Rosaceae • myrobalan plum, ciruela chabacana, cherry plum
Prunus cerasifera 'Atropurpurea'
• Rosaceae
Prunus cerasifera 'Crimson Pointe Plum'
• Rosaceae • myrobalan plum, ciruela chabacana, cherry plum
Prunus cerasifera 'Trailblazer'
• Rosaceae
Prunus emarginata
• Rosaceae • bitter cherry, bittercherry, shrubby bitter cherry
Prunus emarginata var. mollis
• Rosaceae • bitter cherry
Prunus incisa
• Rosaceae • Fuji Cherry
Prunus laurocerasus 'Otto Luyken'
• Rosaceae • cherry laurel, English laurel
Prunus lusitanica
• Rosaceae • Portuguese laurel cherry, Portuguese laurel cherry, Portugal laurel
Prunus serotina
• Rosaceae • Black Cherry, black chokecherry
Prunus serrula
• Rosaceae • birch-bark cherry, birch-bark cherry
Prunus serrulata 'Ito-kukuri'
• Rosaceae
Prunus serrulata 'Shirofugen'
• Rosaceae • Shirofugen Cherry
Prunus serrulata 'Shirotae'
• Rosaceae • Shirotae Cherry
Prunus serrulata 'Shogetsu'
• Rosaceae • Shogetsu Cherry
Prunus serrulata var. lannesiana
• Rosaceae • Oriental Flowering Cherry
Prunus serrulata var. serrulata
• Rosaceae • Japanese flowering cherry, oriental cherry
Prunus spinosa
• Rosaceae • Blackthorn
Prunus subhirtella 'Autumnalis'
• Rosaceae • Autumnalis Cherry
Prunus subhirtella var. ascendens
• Rosaceae
Prunus virginiana
• Rosaceae • chokecherry, common chokecherry
Prunus yedoensis 'Akebono'
• Rosaceae • Akebono Cherry, Yoshino Cherry
Pseudognaphalium luteoalbum
• Asteraceae • Jersey cudweed, winged cudweed
Pseudolarix amabilis
• Pinaceae • Golden Larch
Pseudopanax ferox
• Araliaceae
Pseudopanax laetus Kiwi Gem™
• Araliaceae
Pseudoroegneria spicata
• Poaceae
Pseudosasa japonica 'Tsutsumiana'
• Poaceae • green onion bamboo
Pseudosasa owatarii
• Poaceae
Pseudotaxus chienii
• Taxaceae
Pseudotsuga menziesii
• Pinaceae • Douglas-fir
Pseudotsuga menziesii 'Albers Elegant Weeping'
• Pinaceae
Pseudotsuga menziesii 'Dusek's W.B.'
• Pinaceae
Pseudotsuga menziesii 'Dwarf cultivar'
• Pinaceae
Pseudotsuga menziesii 'El Dorado'
• Pinaceae
Pseudotsuga menziesii 'Emerald Twister'
• Pinaceae
Pseudotsuga menziesii 'Englewood'
• Pinaceae • englewood doug-fir
Pseudotsuga menziesii 'Fletcheri'
• Pinaceae
Pseudotsuga menziesii 'Fournier's Greenspire'
• Pinaceae
Pseudotsuga menziesii 'Foxy Fir'
• Pinaceae
Pseudotsuga menziesii 'Glauca'
• Pinaceae • Blue Douglas-fir
Pseudotsuga menziesii 'Graceful Grace'
• Pinaceae
Pseudotsuga menziesii 'Green Orca'
• Pinaceae
Pseudotsuga menziesii 'Hibbard Broom'
• Pinaceae
Pseudotsuga menziesii 'Hillside Gold'
• Pinaceae
Pseudotsuga menziesii 'Horstmann'
• Pinaceae
Pseudotsuga menziesii 'Hrazdarry'
• Pinaceae
Pseudotsuga menziesii 'Jemez'
• Pinaceae
Pseudotsuga menziesii 'Loggerhead'
• Pinaceae
Pseudotsuga menziesii 'Monstrosa'
• Pinaceae
Pseudotsuga menziesii 'Mossman Pendula'
• Pinaceae
Pseudotsuga menziesii 'Mt. Angel Blue'
• Pinaceae
Pseudotsuga menziesii 'Out on a Limb'
• Pinaceae
Pseudotsuga menziesii 'Powell Valley'
• Pinaceae
Pseudotsuga menziesii 'Pumila'
• Pinaceae
Pseudotsuga menziesii 'Seattle Mountain'
• Pinaceae
Pseudotsuga menziesii 'Serpentine'
• Pinaceae
Pseudotsuga menziesii 'Silverton Steeple'
• Pinaceae
Pseudotsuga menziesii 'Skyline'
• Pinaceae
Pseudotsuga menziesii 'Squirrel's Nest'
• Pinaceae
Pseudotsuga menziesii 'Swan House'
• Pinaceae
Pseudotsuga menziesii 'Uves Golden'
• Pinaceae
Ptelea crenulata
• Rutaceae • California Hoptree
Ptelea trifoliata
• Rutaceae • Hop Tree
Pterocarya rhoifolia
• Juglandaceae • Japanese Wingnut
Pterocarya stenoptera
• Juglandaceae • Chinese Wingnut
Pterostyrax hispida
• Styracaceae
Pterostyrax hispidus
• Styracaceae • Fragrant Epaulette Tree, epaulette tree
Pterostyrax psilophyllus
• Styracaceae
Pterostyrax sp
• Styracaceae
Pulsatilla albana
• Ranunculaceae
Pulsatilla sp.
• Ranunculaceae
Purshia glandulosa
• Rosaceae
Purshia tridentata
• Rosaceae
Pyracantha angustifolia 'Gnome'
• Rosaceae
Pyracantha coccinea 'Dorothy's Fav'
• Rosaceae
Pyrola asarifolia
• Ericaceae
Pyrrosia sheareri
• Polypodiaceae
Pyrus calleryana
• Rosaceae • Callery pear, Bradford pear
Pyrus calleryana 'Chanticleer'
• Rosaceae • Callery pear
Pyrus calleryana 'Redspire'
• Rosaceae • Redspire Pear
Pyrus communis
• Rosaceae • pear, common pear
Pyrus nivalis
• Rosaceae • Snow Pear
Pyrus pashia
• Rosaceae
Pyrus ussuriensis
• Rosaceae • Ussurian Pear