Chemistry, Biology and related disciplines in the WWW

Penstemon (Scrophulariaceae): Botany

• Antelope Valley Beardtongue (Penstemon janishiae) - Images.
• Ash Beadrtongue (Penstemon cinicola) - Images.
• Bartfaden (Penstemon) - Text und Abbildungen.
• Bartfaden (Penstemon davidsonii) - Text und Abbildung.
• Beard Tongue (Penstemon barbatus 'Elfin Pink') - Text and Image.
• Cleveland's Beardtongue (Penstemon clevelandii) - Images.
• Closed-throated Beardtongue (Penstemon personatus) - Image.
• Creeping Penstemon (Penstemon davidsonii) - Images.
• Death Valley Beardtongue (Penstemon fruticiformis var. amargosae) - Images.
• Desert Beardtongue (Penstemon fruticiformis var. fruticiformis) - Image.
• Eastern Whiteflower Beardtongue (Penstemon tenuiflorus) - Images.
• Eaton Firecracker (Penstemon eatonii) - Images.
• Foxglove Beardtongue (Penstemon digitalis) - Text and Images.
• Foxglove Beardtongue, Foxglove Penstemon (Penstemon digitalis) - Text and Images.
• Gray Beardtongue (Penstemon canescens) - Text and Image.
• Grinnell's Beardtongue (Penstemon grinnellii ssp. grinnellii) - Images.
• Hairy Beardtongue (Penstemon hirsutus) - Text and Images.
• Hairy Beardtongue, Hairy Penstemon (Penstemon hirsutus) - Text and Images.
• Hot Rock Penstemon (Penstemon deustus) - Images.
• Inyo Beardtongue (Penstemon papillatus) - Image.
• Large-flowered Beardtongue (Penstemon grandiflorus) - Text and Images.
• Limestone Beardtongue (Penstemon calcareus) - Image.
• Lone Pine Beardtongue (Penstemon patens) - Images.
• Low Beardtongue (Penstemon humilis) - Images.
• Mountain Blue Penstemon (Penstemon laetus ssp. laetus) - Images.
• Mountain Pride (Penstemon newberryi) - Images.
• Penstemon - Abbildungen.
• Penstemon (Botanischer Garten, Universitaet Tuebingen) - Text und Abbildung.
• Penstemon acuminatus var. latebracteatus - Images.
• Penstemon azureus - Images.
• Penstemon azureus var. azureus - Images.
• Penstemon barbatus 'Coccineus' - Text and Image.
• Penstemon bicolor - Images.
• Penstemon bicolor ssp. roseus - Images.
• Penstemon bridgesii - Image.
• Penstemon canescens - Text and Image.
• Penstemon clevelandii var. clevelandii - Image.
• Penstemon clevelandii var. connatus - Images.
• Penstemon cobaea - Text and Image.
• Penstemon confertus - Images.
• Penstemon davidsonii var. davidsonii - Images.
• Penstemon digitalis - Text and Image.
• Penstemon digitalis 'Husker Red' - Text and Image.
• Penstemon eatonii var. eatonii - Images.
• Penstemon eatonii ssp. undosus - Images.
• Penstemon floridus - Images.
• Penstemon fremontii - Image.
• Penstemon gracilentus - Images.
• Penstemon grinnellii - Images.
• Penstemon grinnellii var. grinnellii - Images.
• Penstemon heterodoxus - Images.
• Penstemon heterodoxus var. heterodoxus - Images.
• Penstemon heterophyllus - Image.
• Penstemon heterophyllus - Images.
• Penstemon heterophyllus 'Electric Blue' - Text and Image.
• Penstemon heterophyllus var. heterophyllus - Images.
• Penstemon heterophyllus var. purdyi - Image.
• Penstemon humilis var. humilis - Image.
• Penstemon laetus - Images.
• Penstemon laetus ssp. sagitattus - Images.
• Penstemon laetus var. sagittatus - Images.
• Penstemon laevis - Image.
• Penstemon monoensis - Images.
• Penstemon newberryi ssp. newberryi - Image.
• Penstemon newberryi var. berryi - Images.
• Penstemon newberryi var. newberryi - Images.
• Penstemon newberryi var. sonomensis - Images.
• Penstemon pachyphyllus - Images.
• Penstemon Page - Text and Images.
• Penstemon palmeri - Images.
• Penstemon palmeri var. eglandulous - Images.
• Penstemon palmeri var. palmeri - Images.
• Penstemon parryi - Image.
• Penstemon parvulus - Images.
• Penstemon 'Prairie Fire' - Text and Image.
• Penstemon procerus - Image.
• Penstemon pseudospectabilis - Images.
• Penstemon roezlii - Images.
• Penstemon rostriflorus - Images.
• Penstemon rupicola - Images.
• Penstemon rydbergii - Images.
• Penstemon rydbergii var. oreocharis - Images.
• Penstemon rydbergii var. rydbergii - Images.
• Penstemon secundiflorus - Images.
• Penstemon sp. - Images.
• Penstemon speciosus - Images.
• Penstemon spectabilis - Images.
• Penstemon spectabilis var. spectabilis - Images.
• Penstemon utahensis - Images.
• Pincushion Beardtongue (Penstemon procerus var. formosus) - Images.
• Pinto Beardtongue (Penstemon bicolor ssp. bicolor) - Images.
• Pinyon Beardtongue (Penstemon scapoides) - Images.
• Plumas County Beardtongue (Penstemon neotericus) - Images.
• San Bernardino Beardtongue (Penstemon caesius) - Image.
• San Gabriel Beardtongue (Penstemon labrosus) - Images.
• Scabland Penstemon (Penstemon deustus var. pedicellatus) - Image.
• Scarlet Bugler (Penstemon centranthifolius) - Images.
• Shasta Beardtongue (Penstemon heterodoxus var. shastensis) - Image.
• Sierra Beardtongue (Penstemon heterodoxus var. cephalophorus) - Images.
• Siskiyou Beardtongue (Penstemon anguineus) - Images.
• Snow Mountain Beardtongue (Penstemon purpusii) - Images.
• Stephens' Beardtongue (Penstemon stephensii) - Images.
• Susanville Beardtongue (Penstemon sudans) - Image.
• Thompson's Beardtongue (Penstemon thompsoniae) - Image.
• Thread-leaved Beardtongue (Penstemon filiformis) - Images.
• Thurber's Penstemon (Penstemon thurberi) - Image.
• Tracy's Beardtongue (Penstemon tracyi) - Image.
• White River Valley Beardtongue (Penstemon barnebyi) - Images.
• Zierlicher Bartfaden (Penstemon gracilis) - Abbildung.