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Descurainia incisa ssp. paysonii
(Detling) Rollins
Family:
Brassicaceae
Payson's tansymustard
[
Descurainia pinnata ssp. paysonii
Detling]
Flora of North America
Resources
Cruciferae Jussieu, Ihsan A. Al-Shehbaz in Flora of North America (vol. 7)
Plants
eglandular, often canes-cent.
Basal leaves:
lateral lobes 2 or 3 (or 4) pairs, margins usually entire.
Cauline leaves:
lobes linear, margins entire.
Racemes
eglandular.
Fruiting pedicels
horizontal to divaricate, (10-)13-25 (-30) mm.
Fruits
curved inward. Flowering May-Jun. Disturbed grounds, rocky hillsides, pinyon-juniper woodlands, grassy benches, flats; 1500-2300 m; Colo., N.Mex., Utah. Subspecies
paysonii
and
incisa
are reliably separated by their pedicel length, orientation, and shape and margin of lateral leaf lobes.
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