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FNA | Family List | FNA Vol. 7 | Brassicaceae | Descurainia

5b. Descurainia incisa (Engelmann) Britton subsp. paysonii (Detling) Rollins, Harvard Pap. Bot. 1(4): 46. 1993.

Descurainia pinnata (Walter) Britton subsp. paysonii Detling, Amer. Midl. Naturalist 22: 515. 1939; D. incisa var. paysonii (Detling) N. H. Holmgren; D. pinnata var. paysonii (Detling) S. L. Welsh & Reveal

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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