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Subalpine Fireweed
Epilobium howellii

About Subalpine Fireweed (Epilobium howellii) Epilobium howellii is an uncommon species of flowering plant in the evening primrose family known by the common names Yuba Pass Willowherb and Subalpine Fireweed (though it is not a true fireweed). It is endemic to the High Sierra Nevada of California, where it is known from only about 20 occurrences. It grows in wet mountain habitat such as meadows, often in the presence of mosses and willows, between 2000 and 2700 meters in elevation. The plant was first collected in 1975 at Yuba Pass on Highway 49 in Sierra County, California, and described to science as a new species in 1992.
Plant Description
Plant Type
Perennial herb

Max. Height
7.9 in (20.1 cm)

Native Status
Natural Setting
Elevation ?
6464' - 8830'

Annual Precip. ?
33.3" - 69.2"

Summer Precip. ?
1.52" - 1.99"

Coldest Month ?
20.5° F - 33.7° F

Hottest Month ?
50.7° F - 57.6° F

Humidity ?
0.77 vpd - 13.62 vpd

Landscaping Information
Common uses
Bird Gardens, Hummingbird Gardens

Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Yuba Pass Willowherb

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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