Penstemon spp.
Family: Plantaginaceae
Penstemon image
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.
Image of Penstemon aboriginum
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Image of Penstemon assurgens
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Image of Penstemon cephalophorus
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Image of Penstemon chionophilus
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Image of Penstemon coccinatus
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Image of Penstemon connatifolius
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Image of Penstemon cristatus
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Image of Penstemon desertorum
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Image of Penstemon dimorphus
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Image of Penstemon exsertus
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Image of Penstemon garrettii
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Image of Penstemon helleri
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Image of Penstemon intonsus
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Image of Penstemon lacerellus
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Image of Penstemon magnus
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Image of Penstemon maguirei
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Image of Penstemon mirus
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Image of Penstemon modestus
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Image of Penstemon nyeensis
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Image of Penstemon oreophilus
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Image of Penstemon piliferus
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Image of Penstemon puberulus
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Image of Penstemon shastensis
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Image of Penstemon shockleyi
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Image of Penstemon sonomensis
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Image of Penstemon suffrutescens
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Image of Penstemon tinctus
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Image of Penstemon tolmiei
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Image of Penstemon tracyi
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Image of Penstemon washoensis
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Image of Penstemon wherryi
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Image of Penstemon xylus
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