Erysimum repandum L.

Spreading wallflower (en), Érysimum étalé (fr), Vélar étalé (fr)

Species

Angiosperms > Brassicales > Brassicaceae > Erysimum

Characteristics

Annuals. Trichomes of leaves 2-rayed, mixed with fewer 3-rayed ones. Stems erect, unbranched or branched basally, (0.4-)1.5-4.5(-7) dm. Basal leaves (often withered by fruiting), similar to cauline. Cauline leaves: (proximal and median) petiolate and (distal) sessile, (petiole (0.3-) 0.5-2(-3) cm); blade [linear, narrowly oblanceolate, elliptic, or oblong, (1-)2-8(-11) cm × (2-)5-12(-17) mm, base attenuate], margins sinuate or coarsely dentate to denticulate or repand, (distal) entire or denticulate, (apex acute). Racemes considerably elongated in fruit. Fruiting pedicels divaricate, stout, as wide as fruit, 2-4(-6) mm. Flowers: sepals linear-oblong, 4-6 mm, lateral pair not saccate basally; petals yellow, narrowly oblanceolate to spatulate, 6-8 × 1.5-2 mm, claw 3-6 mm, apex rounded; median filaments 4-6 mm; anthers narrowly oblong, 0.8-1.3 mm. Fruits widely spreading to divaricate-ascending, narrowly linear, straight or curved upward, somewhat torulose, (2-)3-8(-10) cm × 1.5-2 mm, 4-angled, not striped; valves with prominent midvein, pubescent outside, trichomes 2-rayed and, fewer, 3-rayed, often glabrous, sometimes pubescent inside; ovules (40-)50-80(-90) per ovary; style cylindrical or subclavate, stout, 1-4 mm, sparsely pubescent; stigma slightly 2-lobed, lobes as long as wide. Seeds oblong, 1.1-1.5 × 0.6-0.7 mm; not winged or, rarely, winged distally. 2n = 16.
More
Herbs annual, (4-)15-45(-70) cm tall. Trichomes malpighiaceous, mixed with fewer 3-forked ones. Stems erect, simple or branched at base. Basal and lowermost cauline leaves subrosulate, often withered by fruiting; petiole (0.3-)0.5-2(-3) cm; leaf blade linear, narrowly oblanceolate, elliptic, or oblong, flat, (1-)2-8(-11) cm × (2-)5-10(-15) mm, base attenuate, margin sinuate, coarsely dentate, denticulate, or repand, apex acute. Upper leaves sessile, usually smaller than basal, entire or denticulate. Racemes corymbose, densely flowered, ebracteate, elongated considerably in fruit. Fruiting pedicels divaricate, 2-4 mm, stout, about as wide as fruit. Sepals linear-oblong, 4-6 × 0.7-1 mm. Petals yellow, narrowly spatulate, 6-8 × 1.5-2 mm, apex rounded; claw subequaling sepals. Filaments yellow, 4-6 mm; anthers linear, 0.8-1.3 mm. Ovules (40-)50-80(-90) per ovary. Fruit narrowly linear, 4-angled, (2-)3-8(-10) cm × 1.5-2 mm, somewhat torulose, widely spreading or divaricate-ascending, straight or curved upward; valves with a distinct midvein, outside with malpighiaceous and fewer 3-forked trichomes on the outside, inside pubescent; style stout, 1-4 mm, cylindric or subclavate, sparsely pubescent; stigma slightly 2-lobed. Seeds oblong, 1.1-1.5 × 0.6-0.7 mm. Fl. Apr-Jul, fr. May-Sep. 2n = 14.
Annual, 2–4 dm, often much-branched; lvs linear to narrowly lanceolate or oblanceolate, the smaller often entire, the larger commonly conspicuously sinuate-dentate to pinnatifid; sep densely stellate, 4.5–5.5 mm; pet pale yellow, 6–10 mm; anthers 1 mm; mature racemes elongate, the rachis often zigzag, the pedicels very thick, divergent, 2–8 mm; frs widely spreading, 5–12 cm; 2n=14, 16. Native of Europe, found as an occasional weed in waste places in our range and westward. (Cheirinia r.)
Annual herb to 60 cm tall, erect, hairy; hairs medifixed, rarely 3-branched. Leaves linear-lanceolate to lanceolate, dentate to entire. Sepals 3–6 mm long. Petals 6–10 mm long, yellow, pubescent abaxially. Style 2–5 mm long; stigma emarginate. Siliqua linear, 4–10 cm long, 1–1.5 mm wide, terete to quadrangular; valves often tuberculate; pedicels spreading, 2–7 mm long. Seeds oblong, 1–1.7 mm long.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention
Sexuality hermaphrodite
Pollination entomogamy
Spread anemochory
Mature width (meter) -
Mature height (meter) 0.5 - 0.54
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

A weed of cultivated ground. Railrads and roadsides, in various soils.
Light 7-9
Soil humidity 2-6
Soil texture 2-6
Soil acidity 4-8
Soil nutriment -
Hardiness (USDA) 5-8

Usage

Uses medicinal
Edible -
Therapeutic use Fever (seed), Ache(Stomach) (unspecified), Fever (unspecified), Scurvy (unspecified)
Human toxicity toxic (whole)
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -23
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Erysimum repandum leaf picture by Marc Witthandt (cc-by-sa)

Flower

Erysimum repandum flower picture by Lazarchevici Andrei (cc-by-sa)

Distribution

Erysimum repandum world distribution map, present in Australia, Canada, China, France, India, Pakistan, United States of America, and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:324654-2
WFO ID wfo-0000679156
COL ID 3BBRH
BDTFX ID 25550
INPN ID 97257
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Cheirinia repanda Erysimum comperianum Erysimum ramosissimum Erysimum repandum Cheiranthus paniculatus Cheiranthus ramosissimus Crucifera repanda Erysimum patens Erysimum rigidum

Lower taxons

Erysimum repandum var. linnaeanum