''Descurainia incana'' is a species of flowering plant in the

mustard family 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 name mountain tansymustard. It is native to much of North America, including most of Canada, the western United States, and

Baja California Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...

. It is known from many types of habitat. It is a biennial herb with a slender, greenish, often hairy stem sometimes exceeding a meter tall. The leaves are narrowly to widely oval in shape, the lower ones lobed and sometimes compound, the upper generally unlobed. The mustardlike

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 series of developing fruits beneath an elongating cluster of small bright yellow flowers. The fruit is a thin, pointed

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 ...

up to 2 centimeters long.

External links

Jepson Manual TreatmentUSDA Plants ProfilePhoto gallery

incana The Socotra warbler (''Incana incana'') is a species of bird in the family Cisticolidae. It is monotypic within the genus ''Incana''. It is endemic to Socotra. Its natural habitats are subtropical or tropical dry shrubland and subtropical or trop ...

Flora of the Western United States Flora of Baja California Flora of California Flora of the Sierra Nevada (United States) Flora of Western Canada Plants described in 1835 Flora without expected TNC conservation status {{Brassicales-stub