U. S. Department of Agriculture
Ashley National Forest
S. Goodrich 2010
•Lepidium huberi S. L. Welsh & Goodrich
US ESA Status
Final Rule: None.
Currently being considered as
species of concern for Ashley
Why is this species listed?
5 ESA listing factors:
Development: Phosphate mine likely
includes some habitat of this species.
Other than this the Uintah County habitat
seems lightly impacted.
Narrow Range: Yes.
Loss of pollinators: ??
Extremely specific and uncommon
habitat/soil requirements: Less so than
some other narrow endemic plants.
Other known or suspected threats: ??
Uintah County, Utah, Garfield and
Moffet Counties, Colorado.
Surveys are likely most rapid and
accurate during flowering. However, due
to the relatively large size of this
pepperweed, it can be spotted rather
easily during most of the growing season.
Plants perennial from a branched caudex,
mostly 30-75 cm tall; stems woody above
the base; leaves of basal rosette quite
persistent; leaves pinnately lobed or
pinnatifid or some serrate or nearly
entire; flowers small, in racemes; petals
white, 2.3-2.6 mm long; fruit 2.3-2.6 mm
Looks like some other native pepperweeds
but more woody at the base and with more
persistent basal rosettes.
Sagebrush, mountain brush, pinyon-juniper,
and ponderosa pine communities in stream-cut
canyons and on Red Mountain at 2225-2960 m.
Waifs are occasionally found where seeds
wash out from drainages of Red Mountain as
far down as the greasewood area just north of
Lepidium huberii Huber pepperweed
Plant of Concern, Ashley National Forest
S. Goodrich Jan. 2007
Colton Guard Distribution in Uintah
Station County, Utah.
Red Mountain is near the
Brush Cr. Gorge center of the known
distribution of this plant
in Uintah County.
Plants have been found
along the Taylor Mtn.
Road and near Spring
Red Mtn. Creek. A few waifs have
been found in the
greasewood patch above
It is scattered in the
canyons on the south
side of Red Mountain and
the Brush Creek drainage
Steinaker Reservoir north of Red Mountain.
Lepidium huberi with disjunct populations in Uintah
Co., Utah and Garfield Co., Colorado
there is a
s are likely
Red Mountain, 45-14E
A mosaic of mountain brush and mountain big sagebrush cover the
north side of Red Mountain. Huber pepperweed is found in both
mountain brush and sagebrush areas. Unlike many narrow endemic
plants, this one is more common in areas with relatively high percent
plant cover than it is in semi barren areas.
20 Sept. 2006
Huber pepperweed is scattered across much of the cool aspect at the
right of this drainage with mountain brush and grasses. It was not
found on the warm aspect with juniper.
In this setting Huber pepperweed was found with
mountain brush in the bottoms of the drainage ways but
not on the open eroding slopes of Moenkopi Formation.
Habitat for Huber Pepperweed
slope of the
In this setting the plant is well protected from most impacts including
livestock grazing. The phosphate mine is a potential impact. However, this
activity is mostly limited to the Park City Formation. Huber pepperweed has
considerable habitat outside that formation.