''Descurainia torulosa'' is a species of flowering plant in the family

Brassicaceae Brassicaceae () or (the older) Cruciferae () is a medium-sized and economically important family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, while some are shrubs. The le ...

known by the common names Wyoming tansymustard and Wind River tansymustard. It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

Wyoming Wyoming () is a U.S. state, state in the Mountain states, Mountain West subregion of the Western United States. It is bordered by Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho to the west, Utah to the south ...

in the United States, where it is found in the

Absaroka Range The Absaroka Range ( or ) is a sub-range of the Rocky Mountains in the United States. The range stretches about across the Montana–Wyoming border, and at its widest, forming the eastern boundary of Yellowstone National Park along Paradise Va ...

and some

butte __NOTOC__ In geomorphology, a butte () is an isolated hill with steep, often vertical sides and a small, relatively flat top; buttes are smaller landforms than mesas, plateaus, and tablelands. The word ''butte'' comes from a French word mea ...

s in the

Great Divide Basin The Great Divide Basin or Great Divide Closed Basin is an area of land in the Red Desert of Wyoming where none of the water falling as rain to the ground drains into any ocean, directly or indirectly. It is thus an endorheic basin, one of severa ...

.''Descurainia torulosa''.
The Nature Conservancy. This perennial or sometimes annual herb has hairy stems up to 15 centimeters long. The leaves are pinnate, divided into several lobes. The

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...

is a

raceme A raceme ( or ) or racemoid is an unbranched, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are produced as the s ...

of flowers with yellowish

sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined b ...

s and four yellow petals. The fruit is a narrow

silique A silique or siliqua (plural ''siliques'' or ''siliquae'') is a type of fruit (seed capsule) having two fused carpels with the length being more than three times the width. When the length is less than three times the width of the dried fruit i ...

which is torulose, or constricted between the seeds.''Descurainia torulosa''.
Flora of North America.Heidel, B. (2004, March 8)
''Descurainia_torulosa''_Rollins_(Wind_River_tansymustard):_A_technical_conservation_assessment._[Online
_USDA_Forest_Service,_Rocky_Mountain_Region._Blooming_occurs_in_June_and_July. This_plant_grows_on_steep_slopes,_ ''Descurainia_torulosa''_Rollins_(Wind_River_tansymustard):_A_technical_conservation_assessment._[Online
_USDA_Forest_Service,_Rocky_Mountain_Region._Blooming_occurs_in_June_and_July. This_plant_grows_on_steep_slopes,_scree">talus,_and_the_sandy_areas_at_the_bases_of_cliffs.

_References

{{Taxonbar.html" ;"title="scree.html" ;"title="nline">''Descurainia torulosa'' Rollins (Wind River tansymustard): A technical conservation assessment. talus,_and_the_sandy_areas_at_the_bases_of_cliffs.

_References

{{Taxonbar">from=Q5263818 Descurainia.html" ;"title="nline
USDA Forest Service, Rocky Mountain Region. Blooming occurs in June and July. This plant grows on steep slopes, scree">talus, and the sandy areas at the bases of cliffs.

References

{{Taxonbar">from=Q5263818 Descurainia">torulosa Flora of Wyoming Plants described in 1983