Cut-leaved Tansymustard, Mountain Tansymustard
Descurainia incisa ssp. incisa
Synonyms: Descurainia incana ssp. incisa, Descurainia incana ssp. viscosa, Descurainia incisa ssp. viscosa, Descurainia richardsonii ssp. incisa, Descurainia richardsonii ssp. viscosa, Descurainia richardsonii var. sonnei, Descurainia richardsonii var. viscosa
The photos on this page show mountain tansymustard
as seen in a weedy area along Rd K6900 at about 3800' where the road crosses
a tributary of Dairy Creek on the southeastern flanks of Mt. Adams.........June
12, 2005. The photo above shows a close-up of the flowers and newly developing
fruits.
Note the ascending pedicels and fruits of
this species. The fruits (in this case, known as siliques) are long and linear-shaped,
the pods compressed between seeds, giving the pod a bumpy look to it.
The photo above shows a close-up of the dorsal or upper surface
of the pinnately compound leaves of mountain tansymustard.
The photo above shows a close-up of the ventral or lower surface
of the pinnately compound leaves of mountain tansymustard.
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The photo above shows the upper stem and leaves of mountain tansymustard.
Note the numerous hairs, which are tipped with minute glands.
Paul Slichter