Davidson's Penstemon wani nau'in shuka ne na fure wanda na dangin Plantaginaceae. Asalinsa ne a yammacin Amurka kuma ana siffanta shi da karukan sa na ban sha'awa, furanni tubular waɗanda ke fitowa cikin inuwar shuɗi, ruwan hoda, ko ja. Sunan wannan shukar ne bayan Charles Davidson, masanin ilmin halitta kuma masanin halitta na ƙarni na 19 wanda shine farkon wanda ya tattara samfuran wannan nau'in.