Penstemon laetus
Gay penstemon
Photo by Chez Brungraber
Family: Plantaginaceae · Type: Subshrub · Native
Penstemon laetus (Gay penstemon) is a native California subshrub in the Plantaginaceae family, recognized by blue flowers with glabrous floor and hairy anther margins distinguish it.
Gay penstemon is a California native perennial herb found in Sierra Nevada Mountains in rocky or gravelly areas at elevations of 1,500 to 2,500 meters. Flowering from May to July, this plant produces vibrant violet-blue flowers 21 to 35 millimeters long with distinctive short glandular exteriors. Growing with erect woody-branched stems 15 to 75 centimeters tall, its herbage is generally hairy. Its leaves are primarily cauline, with distal leaves 15 to 100 millimeters long, linear to lanceolate in shape and entire. The flower's inner anther sacs have long-hairy margins, with a glabrous staminode adding to its unique botanical character.
Identification and appearance
Key characters: 46 sympatric species; blue flowers with glabrous floor and hairy anther margins distinguish it
Habitat and range
California counties: Kern, Tulare, Tuolumne, Lassen, El Dorado, Yuba, Orange, Ventura, Mariposa, Calaveras, Plumas, Los Angeles, Placer, Siskiyou, Sierra, Nevada, Trinity, Madera, Humboldt, Modoc, Del Norte, Fresno, Butte, Shasta, Lake, Napa, Inyo, Tehama, Contra Costa, Amador, Santa Barbara
How to tell it apart
vs Epilobium: Penstemon has tubular two-lipped flowers with five stamens; Epilobium has four-petaled open flowers with eight stamens.; vs Keckiella: Penstemon is herbaceous and dies back; Keckiella has persistent woody stems year-round.; vs Salvia: Penstemon has five stamens (one sterile); Salvia has only two fertile stamens and square stems.; vs Ipomopsis: Penstemon has two-lipped tubular flowers; Ipomopsis has star-shaped flowers with five equal lobes.; vs Antirrhinum: Penstemon has a sterile stamen visible inside; Antirrhinum has only four stamens, none sterile.
Frequently asked questions
Is Penstemon laetus native to California?
Yes. Penstemon laetus is native to California (recorded as native).
Where in California does Penstemon laetus grow?
Penstemon laetus occurs in Kern, Tulare, Tuolumne, Lassen, El Dorado, Yuba, Orange, Ventura and other counties.
What plant family does Penstemon laetus belong to?
Penstemon laetus is in the Plantaginaceae family, genus Penstemon.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · Index of California Plant Names · CalPhotos
Last updated 2026-10-07
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.