Falsegold Groundsel
Packera pseudaurea
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False-gold Groundsel
Packera pseudaurea var. pseudaurea
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Rocky Mountain Groundsel
Packera streptanthifolia
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Rocky Mountain Groundsel
Packera streptanthifolia var. streptanthifolia
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Buek's Groundsel
Packera subnuda
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Cleftleaf Groundsel
Packera subnuda var. subnuda
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Hoary Groundsel
Packera werneriifolia
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Western Paeony
Paeonia brownii
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California Peony
Paeonia californica
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Desert Palafox
Palafoxia arida
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Desert Palafox
Palafoxia arida var. arida
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Giant Spanish-needle
Palafoxia arida var. gigantea
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Western Panicgrass
Panicum acuminatum
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Pacific Panic Grass
Panicum acuminatum var. fasciculatum
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Panicum acuminatum var. lindheimeri
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Geysers Panicum
Panicum acuminatum var. thermale
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Witch Grass
Panicum capillare
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Mexican Panicgrass
Panicum hirticaule
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Roughstalk Witch Grass
Panicum hirticaule ssp. hirticaule
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Panicum oligosanthes
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Scribner's Panic Grass
Panicum oligosanthes var. scribnerianum
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Silky Panic Grass
Panicum urvilleanum
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Western Poppy
Papaver californicum
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Windpoppy
Papaver heterophyllum
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Rillita Pellitory
Parietaria hespera
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California Pellitory
Parietaria hespera var. californica
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Rillita Pellitory
Parietaria hespera var. hespera
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Pennsylvania Pellitory
Parietaria pensylvanica
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Blue Palo Verde
Parkinsonia florida
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Yellow Palo Verde
Parkinsonia microphylla
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San Bernardino Grass Of Parnassus
Parnassia cirrata
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San Bernardino Grass-of-parnassus
Parnassia cirrata var. cirrata
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Cascade Grass-of-parnassus
Parnassia cirrata var. intermedia
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Fringed Grass
Parnassia fimbriata
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California Grass Of Parnassus
Parnassia palustris
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Small-flowered Grass-of-parnassus
Parnassia parviflora
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Ahart's Nailwort
Paronychia ahartii
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Knotgrass
Paspalum distichum
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Oregon Boxwood
Paxistima myrsinites
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Brewer's Mitrewort
Pectiantia breweri
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Coastal Miterwort
Pectiantia ovalis
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Five Stamened Miterwort
Pectiantia pentandra
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Manybristle Chinchweed
Pectis papposa
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Chinch-weed
Pectis papposa var. papposa
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Mixed-nut Pectocarya
Pectocarya heterocarpa
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Sagebrush Combseed
Pectocarya linearis
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Narrow-toothed Pectocarya
Pectocarya linearis ssp. ferocula
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Northern Pectocarya
Pectocarya penicillata
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Baja Pectocarya
Pectocarya peninsularis
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Wide-toothed Pectocarya
Pectocarya platycarpa
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Arched-nut Pectocarya
Pectocarya recurvata
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Round-nut Pectocarya
Pectocarya setosa
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Little Elephant's Head
Pedicularis attollens
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Bracted Lousewort
Pedicularis bracteosa
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Yellowish Lousewort
Pedicularis bracteosa var. flavida
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Great Basin Lousewort
Pedicularis centranthera
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Curved-beak Lousewort
Pedicularis contorta
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Scalloped-leaved Lousewort
Pedicularis crenulata
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Warrior's Plume
Pedicularis densiflora
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Dudley's Lousewort
Pedicularis dudleyi