Purple Eyed Grass
Olsynium douglasii var. douglasii
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Beavertail Pricklypear
Opuntia basilaris
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Beavertail Pricklypear
Opuntia basilaris var. basilaris
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Pancake Prickly-pear
Opuntia chlorotica
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Tulip Pricklypear
Opuntia phaeacantha
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Grizzlybear Pricklypear
Opuntia polyacantha var. erinacea
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Fascicled Broom Rape
Orobanche fasciculata
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Rosy Owl's-clover
Orthocarpus bracteosus
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Copeland's Owl's-clover
Orthocarpus cuspidatus ssp. copelandii
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Yellow Owl's Clover
Orthocarpus luteus
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Spiny Caper
Oxystylis lutea
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Narrowleaf Oxytheca
Oxytheca dendroidea
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Tree-like Puncturebract
Oxytheca dendroidea ssp. dendroidea
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Roundleaf Puncturebract
Oxytheca perfoliata
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Lobeleaf Groundsel
Packera multilobata
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Western Paeony
Paeonia brownii
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Desert Palafox
Palafoxia arida
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Mexican Panicgrass
Panicum hirticaule
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Silky Panic Grass
Panicum urvilleanum
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Blue Palo Verde
Parkinsonia florida
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Yellow Palo Verde
Parkinsonia microphylla
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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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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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Azure Penstemon
Penstemon azureus
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Limestone Beardtongue
Penstemon calcareus
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Gray Beardtongue
Penstemon cinereus
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Cleveland's Beardtongue
Penstemon clevelandii
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Scabland Penstemon
Penstemon deustus
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Firecracker Penstemon
Penstemon eatonii
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Desert Beardtongue
Penstemon fruticiformis
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Low Beardtongue
Penstemon humilis
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Low Beardtongue
Penstemon humilis var. humilis
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Western Desert Penstemon
Penstemon incertus
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Antelope Valley Beardtongue
Penstemon janishiae
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Mono Penstemon
Penstemon monoensis
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Palmer's Penstemon
Penstemon palmeri
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Penstemon Hybrid
Penstemon palmeri 'Hybrid'
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Palmer's Penstemon
Penstemon palmeri var. palmeri
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Lone Pine Beardtongue
Penstemon patens
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Desert Penstemon
Penstemon pseudospectabilis
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Rydberg's Penstemon
Penstemon rydbergii
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Royal Penstemon
Penstemon speciosus
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Thurber's Penstemon
Penstemon thurberi
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Goldenback Fern
Pentagramma triangularis
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Wild Crab Apple
Peraphyllum ramosissimum
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Bolander's Yampah
Perideridia bolanderi
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Bolander's Yampah
Perideridia bolanderi ssp. bolanderi
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Perideridia bolanderi ssp. involucrata
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Emory's Rockdaisy
Perityle emoryi
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Nevada Rockdaisy
Perityle megalocephala
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Narrowleaf Sandpaper Plant
Petalonyx linearis
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Shinyleaf Sandpaper Plant
Petalonyx nitidus
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Thurber's Sandpaper Plant
Petalonyx thurberi
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Pygmy Cedar
Peucephyllum schottii
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Glandular Yellow Phacelia
Phacelia adenophora
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Limestone Phacelia
Phacelia affinis