Lepidium huberii

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					   Lepidium huberi

U. S. Department of Agriculture
        Forest Service
    Ashley National Forest
         Vernal, Utah
        S. Goodrich 2010
  •Lepidium huberi S. L. Welsh & Goodrich
Common Names
  •Huber pepperweed
         US ESA Status

Final Rule: None.

Currently being considered as
species of concern for Ashley
National Forest.
   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: ??
      Global Distribution
Uintah County, Utah, Garfield and
Moffet Counties, Colorado.
          Survey Window
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.
    Physical Characteristics

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
Steinaker Reservoir.
Lepidium huberii Huber pepperweed
Plant of Concern, Ashley National Forest

                           S. Goodrich Jan. 2007
                           Lepidium huberi
            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
                           Steinaker Reservoir.
                           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

                                              In addition
                                              to the
                                              there is a
                                              from Moffat
                                              Co. CO.
                                              With more
                                              s are likely
                                              to be
                    Garfield County
                     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
                                                          Habitat for
                                                          gorges on
                                                          the south
                                                          slope of the
                                                          eastern Uinta

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.