Taxon  Report   6161    
Penstemon filiformis  (D. D. Keck) D. D. Keck
Thread leaved beardtongue,  Threadleaf beardtongue
Penstemon filiformis
© 2015 Steve Matson
Photos from
CalPhotos / Calflora
Penstemon filiformis
© 2015 Steve Matson
Penstemon filiformis
© 2008 Sierra Pacific Industries
Penstemon filiformis, a dicot, is a perennial herb that is native to California, is endemic (limited) to California.
California Rare Plant Rank: 1B.3 (rare, threatened, or endangered in CA and elsewhere).   8th Edition

Interactive Distribution Map

Observation Hotline
(observation details)

point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations

Bloom Period
Penstemon filiformis
© 2015 Julie Kierstead Nelson
Genus: Penstemon
Communities: Foothill Woodland, Yellow Pine Forest

Serpentine affinity: 5; (broad endemic)

Name Status:
Accepted by JEF + CNPS + PLANTS

More information about  Penstemon filiformis
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


Search the International Plants Names Index

Search (Flora of North America)

website references from Google

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Jan 23, 2019).