Nelson's Tansymustard - Descurainia pinnata var. nelsonii
See species description.
Lesica (2012) separates variety nelsonii from teh others by the absence of glandular hairs on the stems; fruits less 12 mm or less long; and pedicels 2-6 mm long.
BC and MT south to CA, NV, ID, WY and CO (Kartesz 2009).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
- Additional ReferencesLegend: View Online Publication
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- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.