Common Reed
Phragmites australis
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Pacific Ninebark
Physocarpus capitatus
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Siskiyou Beauty Ninebark
Physocarpus capitatus 'Siskiyou Beauty'
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Tilden Park Ninebark
Physocarpus capitatus 'Tilden Park'
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Chaparral Pea
Pickeringia montana
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Montana Chaparral Pea
Pickeringia montana var. montana
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Knobcone Pine
Pinus attenuata
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Torrey Pine
Pinus torreyana
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Torrey Pine
Pinus torreyana ssp. torreyana
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Elegant Piperia
Piperia elegans
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Chaparral Orchid
Piperia elongata
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Flat Spurred Piperia
Piperia transversa
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Alaska Piperia
Piperia unalascensis
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Adobe Popcornflower
Plagiobothrys acanthocarpus
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Bracted Popcornflower
Plagiobothrys bracteatus
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Artist's Popcornflower
Plagiobothrys chorisianus
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Cognate Popcornflower
Plagiobothrys cognatus
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Stalked Popcornflower
Plagiobothrys stipitatus
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Pacific Popcornflower
Plagiobothrys tenellus
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Slender Popcornflower
Plagiobothrys tener
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Serpentine Popcornflower
Plagiobothrys tener var. subglaber
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Plagiobothrys tener var. tener
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Rough-nutlet Popcornflower
Plagiobothrys trachycarpus
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Wavy-stemmed Popcornflower
Plagiobothrys undulatus
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Dotseed Plantain
Plantago erecta
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Woolly Plantain
Plantago patagonica
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Western Sycamore
Platanus racemosa
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Creamcups
Platystemon californicus
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Longspur Seablush
Plectritis ciliosa
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One-sided Bluegrass
Poa secunda ssp. secunda
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Douglas' Mesamint
Pogogyne douglasii ssp. parviflora
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Thymeleaf Beardstyle
Pogogyne serpylloides
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California Manyseed
Polycarpon depressum
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Bolander's Knotweed
Polygonum bolanderi
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Spurry Knotweed
Polygonum spergulariiforme
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California Polypody
Polypodium californicum
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Sarah Lyman California Polypody Fern
Polypodium californicum 'Sarah Lyman'
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Western Sword Fern
Polystichum munitum
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Fremont Cottonwood
Populus fremontii
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Nimbus Fremont Cottonwood (male)
Populus fremontii 'Nimbus'
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Fremont Cottonwood
Populus fremontii ssp. fremontii
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Black Cottonwood
Populus trichocarpa
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Padre's Shootingstar
Primula clevelandii
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Mosquito Bills
Primula hendersonii
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Bitter Cherry
Prunus emarginata
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Desert Range Almond
Prunus fasciculata
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Hollyleaf Cherry
Prunus ilicifolia
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Hollyleaf Cherry
Prunus ilicifolia ssp. ilicifolia
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Catalina Cherry
Prunus ilicifolia ssp. lyonii
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Chokecherry
Prunus virginiana
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Western Chokecherry
Prunus virginiana var. demissa
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Fragrant Everlasting
Pseudognaphalium beneolens
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Bicolored Everlasting
Pseudognaphalium biolettii
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California Cudweed
Pseudognaphalium californicum
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Macoun's Everlasting
Pseudognaphalium macounii
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Pink Cudweed
Pseudognaphalium ramosissimum
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Chilean Cudweed
Pseudognaphalium stramineum
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Bigcone Douglas Fir
Pseudotsuga macrocarpa
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Western Bracken Fern
Pteridium aquilinum
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Hairy Brackenfern
Pteridium aquilinum var. pubescens