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holmgren brittonia
firecracker penstemon
penstemon eatonii
penstemon gracilis
desert penstemon
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usda plants
penstemon pinifolius
pineleaf penstemon
desert beardtongue
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Penstemon leiophyllus var. francisci ...
www.wildflower.org
USDA Plants Database
plants.usda.gov
CalPhotos: Penstemon leiophyllus var ...
calphotos.berkeley.edu
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calphotos.berkeley.edu
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commons.wikimedia.org
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www.nps.gov
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luirig.altervista.org
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spain.inaturalist.org
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penstemons.org
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calphotos.berkeley.edu
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penstemons.org
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www.biodiversitylibrary.org
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www.worldplants.de
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luirig.altervista.org
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commons.wikimedia.org
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penstemons.org
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commons.wikimedia.org
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nargs.org
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wolfelab.asc.ohio-state.edu
variedad Penstemon leiophyllus ...
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observation.org
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