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Range and rarity
Rare (≤ 5 counties)
A broader rarity slice: taxa known from five counties or fewer nationwide. Includes single-county endemics plus the next-most-restricted species.
- Matching taxa
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Showing 6,451–6,500 of 9,281.
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Penstemon barrettiae A. Gray PEBA7Barrett's beardtongue · Scrophulariaceae - Penstemon bicolor (Brandegee) Clokey & D.D. Keck PEBI2pinto beardtongue · Scrophulariaceae
- Penstemon bicolor (Brandegee) Clokey & D.D. Keck ssp. bicolor PEBIB2pinto beardtongue · Scrophulariaceae
- Penstemon bicolor (Brandegee) Clokey & D.D. Keck ssp. roseus Clokey & D.D. Keck PEBIRpinto beardtongue · Scrophulariaceae
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Penstemon bracteatus D.D. Keck PEBR8Red Canyon beardtongue · Scrophulariaceae -
Penstemon caesius A. Gray PECA3San Bernardino beardtongue · Scrophulariaceae -
Penstemon calcareus Brandegee PECA5limestone beardtongue · Scrophulariaceae -
Penstemon californicus (Munz & I.M. Johnst.) D.D. Keck PECA6California penstemon · Scrophulariaceae -
Penstemon cardinalis Wooton & Standl. ssp. cardinalis PECAC5cardinal beardtongue · Scrophulariaceae -
Penstemon cardinalis Wooton & Standl. ssp. regalis (A. Nelson) Nisbet & R.C. Jacks. PECARcardinal beardtongue · Scrophulariaceae -
Penstemon caryi Pennell PECA17Cary's beardtongue · Scrophulariaceae -
Penstemon clevelandii A. Gray PECLCleveland's beardtongue · Scrophulariaceae -
Penstemon clevelandii A. Gray ssp. clevelandii PECLC5Cleveland's beardtongue · Scrophulariaceae -
Penstemon clevelandii A. Gray ssp. connatus (Munz & I.M. Johnst.) D.D. Keck PECLC4San Jacinto beardtongue · Scrophulariaceae -
Penstemon clevelandii A. Gray ssp. mohavensis D.D. Keck PECLM2Cleveland's beardtongue · Scrophulariaceae -
Penstemon clutei A. Nelson PECL5Sunset Crater beardtongue · Scrophulariaceae -
Penstemon compactus (D.D. Keck) Crosswh. PECO10compact penstemon · Scrophulariaceae -
Penstemon crandallii A. Nelson ssp. atratus D.D. Keck PECRACrandall's beardtongue · Scrophulariaceae -
Penstemon crandallii A. Nelson ssp. crandallii PECRCCrandall's beardtongue · Scrophulariaceae -
Penstemon crandallii A. Nelson ssp. glabrescens (Pennell) D.D. Keck PECRGCrandall's beardtongue · Scrophulariaceae -
Penstemon crandallii A. Nelson ssp. taosensis (D.D. Keck) Kartesz & Gandhi PECRT2Taos penstemon · Scrophulariaceae -
Penstemon cyathophorus Rydb. PECY6sagebrush beardtongue · Scrophulariaceae -
Penstemon davidsonii Greene var. praeteritus Cronquist PEDAPtimberline beardtongue · Scrophulariaceae -
Penstemon debilis O'Kane & J.L. Anderson PEDE22Parachute beardtongue · Scrophulariaceae -
Penstemon degeneri Crosswh. PEDE12Degener's beardtongue · Scrophulariaceae -
Penstemon discolor D.D. Keck PEDI6Cataiina beardtongue · Scrophulariaceae - Penstemon distans N.H. Holmgren PEDI10Mt. Tumbull beardtongue · Scrophulariaceae
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Penstemon dolius M.E. Jones ex Pennell var. duchesnensis N.H. Holmgren PEDODDuchesne penstemon · Scrophulariaceae -
Penstemon eatonii A. Gray ssp. exsertus (A. Nelson) D.D. Keck PEEAEfirecracker penstemon · Scrophulariaceae -
Penstemon elegantulus Pennell PEEL4rockvine penstemon · Scrophulariaceae -
Penstemon eriantherus Pursh var. argillosus M.E. Jones PEERAfuzzytongue penstemon · Scrophulariaceae -
Penstemon filiformis (D.D. Keck) D.D. Keck PEFI2threadleaf beardtongue · Scrophulariaceae - Penstemon floribundus D. Danley PEFL7Cordillia's beardtongue · Scrophulariaceae
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Penstemon floridus Brandegee var. austinii (Eastw.) N.H. Holmgren PEFLA2Austin's beardtongue · Scrophulariaceae -
Penstemon floridus Brandegee var. floridus PEFLFPanamint beardtongue · Scrophulariaceae -
Penstemon flowersii Neese & S.L. Welsh PEFL8Flowers' beardtongue · Scrophulariaceae -
Penstemon franklinii S.L. Welsh PEFR9Franklin's penstemon · Scrophulariaceae -
Penstemon fruticiformis Coville PEFR2Death Valley beardtongue · Scrophulariaceae -
Penstemon fruticiformis Coville ssp. amargosae D.D. Keck PEFRADeath Valley beardtongue · Scrophulariaceae -
Penstemon fruticiformis Coville ssp. fruticiformis PEFRF3Death Valley beardtongue · Scrophulariaceae -
Penstemon gibbensii Dorn PEGI4Gibbens' beardtongue · Scrophulariaceae -
Penstemon glandulosus Douglas var. chelanensis (D.D. Keck) Cronquist PEGLC2stickystem penstemon · Scrophulariaceae -
Penstemon glaucinus Pennell PEGL10blueleaf beardtongue · Scrophulariaceae -
Penstemon goodrichii N.H. Holmgren PEGO2Lapoint beardtongue · Scrophulariaceae -
Penstemon gormanii Greene PEGOGorman's beardtongue · Scrophulariaceae -
Penstemon grahamii D.D. Keck PEGR6Uinta Basin beardtongue · Scrophulariaceae -
Penstemon harringtonii Penl. PEHA11Harrington's beardtongue · Scrophulariaceae -
Penstemon havardii A. Gray PEHA2Big Bend beardtongue · Scrophulariaceae -
Penstemon haydenii S. Watson PEHA12blowout beardtongue · Scrophulariaceae -
Penstemon heterodoxus A. Gray var. cephalophorus (Greene) N.H. Holmgren PEHEC2Sierra beardtongue · Scrophulariaceae