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San Bernardino Beardtongue
Penstemon caesius
About San Bernardino Beardtongue (Penstemon caesius) 0 Nurseries Carry This Plant Penstemon caesius is a species of penstemon known by the common name San Bernardino beardtongue. It is endemic to California, where it is known from the San Bernardino and San Gabriel Mountains, as well as the southern mountains of the Sierra Nevada. It is a member of the flora on rocky slopes and in coniferous forests and alpine habitat in the mountains. It is a perennial herb with erect branches up to about 80 centimeters in maximum height. The lower branches may be woody, the upper hairless and waxy, and the flower cluster hairy. Most of the leaves are basal on the plant, rounded or oval, and up to about 4 centimeters long. The flower cluster produces purple-blue tubular flowers roughly 2 centimeters long. The flower has a hairy outer surface, a coat of hairs inside, and a hairless staminode. The flowers of this penstemon are pollinated by bees of genus Osmia, which feed on their nectar.
Plant Description
Plant Type
Plant Type
Perennial herb

0.7 - 2.6 ft tall

Flower Color
Flower Color

Wildlife Supported

Landscaping Information
Full Sun, Part Shade

Common uses
Common uses
Hummingbird Gardens, Butterfly Gardens, Bee Gardens

Natural Setting
Site Type
Site Type
Rocky ridges and slopes

Annual Precipitation: 14.8" - 52.5", Summer Precipitation: 0.24" - 2.94", Coldest Month: 19.0" - 53.0", Hottest Month: 42.2" - 75.9", Humidity: 1.17" - 21.14", Elevation: 1869" - 12554"

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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