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Descurainia pinnata (Walter) Britton
TANSY-MUSTARD
Western tansymustard

Life   Plantae   Dicotyledoneae   Brassicaceae   Descurainia

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Descurainia pinnata
© Copyright Bobby Hattaway 2011 · 5
Descurainia pinnata
Descurainia pinnata
© Copyright Bobby Hattaway 2011 · 5
Descurainia pinnata

Descurainia pinnata
© Copyright Bobby Hattaway 2011 · 5
Descurainia pinnata
Descurainia pinnata
© Copyright Bobby Hattaway 2011 · 5
Descurainia pinnata

Descurainia pinnata
© Copyright Bobby Hattaway 2011 · 5
Descurainia pinnata
Descurainia pinnata
© Copyright Jennifer Larson 2012 · 2
Descurainia pinnata

Descurainia pinnata
© Copyright Jennifer Larson 2012 · 2
Descurainia pinnata
Descurainia pinnata, seed
© Copyright Seeds USID 2015 · 1
Descurainia pinnata, seed

Descurainia pinnata, seed
© Copyright Seeds USID 2015 · 1
Descurainia pinnata, seed
Descurainia pinnata, seed
© Copyright Seeds USID 2015 · 1
Descurainia pinnata, seed

Descurainia pinnata, leaf and flower and fruit
© Kay Yatskievych, 2003 · 1
Descurainia pinnata, leaf and flower and fruit

Associates · map
FamilyScientific name @ source (records)
Albuginaceae  Albugo candida @ BPI (7)
Andrenidae  Andrena candida @ BBSL (6)

Andrena capricornis @ BBSL (1)

Andrena illinoiensis @ BBSL (4)

Andrena livida @ BBSL (4)

Andrena melanochroa @ BBSL (2)

Andrena piperi @ BBSL (1)

Andrena prunorum @ BBSL (1)

Andrena scurra @ BBSL (3)
Colletidae  Colletes phaceliae @ BBSL (1)

Hylaeus wootoni @ UCRC_ENT (1)
Halictidae  Halictus ligatus @ AMNH_BEE (1)

Halictus parallelus @ AMNH_BEE (1)

Lasioglossum incompletum @ BBSL (1)

Lasioglossum pruinosum @ BBSL (1)

Lasioglossum pulveris @ BBSL (2)

Lasioglossum sedi @ BBSL (1)

Lasioglossum sisymbrii @ BBSL (3)
Miridae  Orthotylus whiteheadi @ AMNH_IZC (4)
Peronosporaceae  Peronospora parasitica @ BPI (14)

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FNA Vol. 7 Page 519, 520, 521, 523, 525, 526 , 527 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Brassicaceae | Descurainia

11. Descurainia pinnata (Walter) Britton, Mem. Torrey Bot. Club. 5: 173. 1894.

Erysimum pinnatum Walter, Fl. Carol. 174. 1788; Sophia pinnata (Walter) Howell

Annuals; glandular or egland-ular; sparsely to densely pubescent, sometimes glabrous distally, canescent or not, trichomes dendritic. Stems erect, unbranched or branched basally and/or distally, (0.8-)1.3-5.7(-9.2) dm. Basal leaves: petiole 0.5-3.6 cm; blade 1- or 2-pinnate, ovate or oblong to oblanceolate in outline, 1-15 cm, lateral lobes (4-9 pairs), linear or oblanceolate to ovate, margins entire or dentate. Cauline leaves sessile or shortly petiolate; blade smaller distally, distal lobes often narrower, surfaces densely pubescent. Racemes considerably elongated in fruit. Fruiting pedicels usually ascending to divaricate or horizontal, rarely descending (at 20-110º angle), straight or slightly recurved, 4-18 (-23) mm. Flowers: sepals spreading to ascending, yellow, purple, or rose, oblong, 0.8-2.6 mm, pubescent; petals (whitish or yellow), narrowly oblanceolate, 1-3 × 0.3-1 mm; median filaments 1-2.8 mm; anthers 0.2-0.4 mm. Fruits erect to ascending, usually clavate, rarely broadly linear (wider distally), not torulose, 4-13(-17) × 1.2-2.2 mm; valves each with distinct midvein; septum not veined; ovules 16-40 per ovary; style obsolete, 0.02-0.2 mm, glabrous. Seeds biseriate, reddish brown, oblong, 0.6-0.9 × 0.4-0.5 mm.

Subspecies 4 (4 in the flora): North America, n Mexico.

Updated: 2021-06-17 06:25:22 gmt
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