Lower Taxa Penstemon arkansanus PennellPenstemon cobaea Nutt.Penstemon digitalis Nutt. ex SimsPenstemon grandiflorus Nutt.Penstemon pallidus SmallPenstemon tubaeflorus Nutt.
Lower Taxa
Treatments in Other Floras @ www.efloras.org A Checklist for the South China Botanical Garden, Guangzhou, Guangdong Province, P. R. ChinaFlora of Taiwan Checklist Other Databases W3TROPICOS IPNI ING Genus Search
Other Databases
