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Erysimum asperum (Nutt. ) Dc.
WESTERN WALLFLOWER
Life   Plantae   Dicotyledoneae   Brassicaceae   Erysimum


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Associates · map
FamilyScientific name @ source (records)
Andrenidae  Andrena cressonii @ AMNH_BEE (1)

Andrena miranda @ AMNH_BEE (1)
Apidae  Nomada articulata @ AMNH_BEE (1)
Colletidae  Colletes phaceliae @ AMNH_BEE (1)
Halictidae  Agapostemon virescens @ AMNH_BEE (1)

Lasioglossum perpunctatum @ AMNH_BEE (1)

Lasioglossum succinipenne @ AMNH_BEE (6)
Megachilidae  Coelioxys rufitarsis @ AMNH_BEE (5)

Megachile latimanus @ AMNH_BEE (1)

Megachile texana @ AMNH_BEE (1)

Osmia rawlinsi @ BBSL__BBSLID (1)
Peronosporaceae  Peronospora parasitica @ BPI (1)
Pucciniaceae  Puccinia holboellii @ BPI (1)

Puccinia subnitens @ BPI (3)

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Following modified from Plants Database, United States Department of Agriculture
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Following modified from Flora of North America
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FNA Vol. 7 Page 532 , 535, 537 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Brassicaceae | Erysimum

3. Erysimum asperum (Nuttall) de Candolle, Syst. Nat. 2: 505. 1821.

Cheiranthus asper Nuttall, Gen. N. Amer. Pl. 2: 69. 1818; Cheirinia aspera (Nuttall) Rydberg; Erysimum asperum var. dolichocarpum O. E. Schulz

Biennials. Trichomes of leaves 2- or 3-rayed. Stems erect, unbranched or branched distally, (0.6-)1.2-6.5(-8) dm. Basal leaves (often withered by fruiting); blade oblanceolate, 2-10 cm × (0.2-)0.5-1.5(-2.4) mm, base attenuate, margins dentate, apex acute. Cauline leaves (distal) sessile; blade margins entire or denticulate. Racemes considerably elongated in fruit. Fruiting pedicels horizontal to divaricate, slender, narrower than fruit, 5-16(-25) mm. Flowers : sepals oblong to linear-oblong, 8-12 mm, lateral pair slightly saccate basally; petals yellow, obovate to suborbicular, 13-22 × 4-9 mm, claw 8-15 mm, apex rounded; median filaments 8-14 mm; anthers linear, 2.5-4 mm. Fruits widely spreading or divaricate, narrowly linear, usually straight, rarely curved upward, not torulose, (3-)5-12(-14) cm × 1.2-2.7 mm, 4-angled, strongly (longitudinally) 4-striped; valves with prominent midvein and replum, densely pubescent outside, trichomes 2-rayed between midvein and replum, glabrous inside; ovules 72-120 per ovary; style cylindrical, slender, 1-4 mm, sparsely pubescent; stigma slightly 2-lobed, lobes as long as wide. Seeds ovoid, (1-)1.3-2.3 × 0.7-1.2 mm; usually not winged, rarely winged distally. 2 n = 36.

Flowering Apr-Jun(-Aug). Prairies, sand dunes, roadsides, bluffs, sandhills along stream banks, knolls, open plains; 200-2000 m; Alta., Man., Sask.; Ark., Colo., Ill., Kans., Minn., Mont., Nebr., N.Mex., N.Dak., Okla., S.Dak., Tex., Wyo.

Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Erysimum+asperum&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Erysimum+asperum&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant
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Updated: 2017-11-19 04:06:47 gmt
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