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Penstemon
Family: Plantaginaceae
Penstemon image
Jillian Cowles
  • Gleason & Cronquist
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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.
Species within checklist: Flora of the Southern Colorado Plateau Network
Penstemon ambiguus
Image of Penstemon ambiguus
Penstemon angustifolius
Image of Penstemon angustifolius
Penstemon barbatus
Image of Penstemon barbatus
Penstemon breviculus
Image of Penstemon breviculus
Penstemon carnosus
Image of Penstemon carnosus
Penstemon clutei
Image of Penstemon clutei
Penstemon comarrhenus
Image of Penstemon comarrhenus
Penstemon crandallii
Image of Penstemon crandallii
Penstemon eatonii
Image of Penstemon eatonii
Penstemon fendleri
Image of Penstemon fendleri
Penstemon jamesii
Image of Penstemon jamesii
Penstemon lentus
Image of Penstemon lentus
Penstemon linarioides
Image of Penstemon linarioides
Penstemon navajoa
Image of Penstemon navajoa
Penstemon nudiflorus
Image of Penstemon nudiflorus
Penstemon ophianthus
Image of Penstemon ophianthus
Penstemon osterhoutii
Image of Penstemon osterhoutii
Penstemon pachyphyllus
Image of Penstemon pachyphyllus
Penstemon palmeri
Image of Penstemon palmeri
Penstemon pseudoputus
Image of Penstemon pseudoputus
Penstemon pseudospectabilis
Image of Penstemon pseudospectabilis
Penstemon rostriflorus
Image of Penstemon rostriflorus
Penstemon rydbergii
Image of Penstemon rydbergii
Penstemon secundiflorus
Image of Penstemon secundiflorus
Penstemon strictiformis
Image of Penstemon strictiformis
Penstemon strictus
Image of Penstemon strictus
Penstemon thompsoniae
Image of Penstemon thompsoniae
Penstemon unilateralis
Image of Penstemon unilateralis
Penstemon utahensis
Image of Penstemon utahensis
Penstemon virgatus
Image of Penstemon virgatus
Penstemon watsonii
Image of Penstemon watsonii
The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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