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Penstemon
Family: Plantaginaceae
Penstemon image
Max Licher
  • Gleason & Cronquist
  • Resources
Vascular plants of NE US and adjacent Canada
Cal herbaceous, deeply 5-parted; cor tubular or trumpet-shaped, ±distinctly bilabiate, the tube much longer than the lobes; fertile stamens 4, about as long as the tube, the pollen-sacs divaricate; sterile stamen about as long as the fertile ones, usually yellow-bearded toward the tip; style elongate; stigma capitate; fr septicidal; ours (biennial or) perennial herbs, the erect stems arising from a rosette of petioled basal lvs, the cauline lvs oblong to lanceolate or ovate, sessile and often clasping, the upper progressively reduced; fls white to blue-violet or red-violet (red in some extralimital spp.), in terminal paniculiform or racemiform infls. Our spp. all with highly variable lvs, much alike from sp. to sp. 280, mainly N. Amer.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
<< 1 - 50 taxa >>
Penstemon abietinus
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Penstemon absarokensis
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Penstemon acaulis
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Penstemon acuminatus
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Penstemon alamosensis
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Penstemon albertinus
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Penstemon albidus
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Penstemon albomarginatus
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Penstemon alluviorum
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Penstemon ambiguus
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Penstemon ammophilus
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Penstemon anguineus
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Penstemon angustifolius
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Penstemon arenarius
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Penstemon arenicola
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Penstemon aridus
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Penstemon arkansanus
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Penstemon attenuatus
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Penstemon atwoodii
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Penstemon auriberbis
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Penstemon australis
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Penstemon azureus
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Penstemon baccharifolius
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Penstemon barbatus
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Penstemon barnebyi
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Penstemon barrettiae
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Penstemon bicolor
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Penstemon bracteatus
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Penstemon breviculus
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Penstemon bryantiae
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Penstemon buckleyi
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Penstemon caesius
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Penstemon caespitosus
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Penstemon calcareus
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Penstemon californicus
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Penstemon calycosus
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Penstemon canescens
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Penstemon cardinalis
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Penstemon cardwellii
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Penstemon carnosus
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Penstemon caryi
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Penstemon centranthifolius
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Penstemon cinicola
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Penstemon clevelandii
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Penstemon clutei
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Penstemon cobaea
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Penstemon comarrhenus
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Penstemon compactus
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Penstemon concinnus
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Penstemon confertus
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