Erysimum inconspicuum |
Brassicaceae tribe Erysimeae |
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prairie rocket, shy wallflower, small wallflower, small-flower rocket, small-flower rocket rocket, smallflower wallflower |
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Habit | Biennials or perennials; (short-lived, caudex thickened, usually simple, rarely branched). | Annuals, biennials, perennials, or subshrubs [shrubs]; eglandular. |
Stems | erect, unbranched or branched distally, 1.5–7 dm. |
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Basal leaves | blade linear to linear-oblanceolate, 1.5–6(–8) cm × 2–8 mm, base attenuate, margins entire or dentate, apex acute. |
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Cauline leaves | (distal) sessile; blade margins entire or denticulate. |
petiolate or sessile; blade base not auriculate, margins entire, dentate, denticulate, dentate-sinuate, or repand. |
Racemes | elongated or not in fruit. |
usually ebracteate [bracteate], elongated [not elongated] in fruit. |
Flowers | sepals oblong to linear-oblong, 4–6 mm, lateral pair slightly saccate basally; petals yellow, oblanceolate, 6–9(–11) × 1–2 mm, claw 5–7 mm, apex rounded; median filaments 5–7 mm; anthers narrowly oblong to linear, 1–2 mm. |
actinomorphic; sepals erect, lateral pair saccate or not basally; petals usually yellow or orange, rarely pink or purple [white], claw present, distinct; filaments unappendaged, not winged; pollen 3-colpate. |
Fruiting pedicels | divaricate-ascending to ascending, stout, slightly narrower than fruit, 4–9(–15) mm. |
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Fruits | ascending to divaricate-ascending, (not appressed to rachis), narrowly linear, straight, not torulose, 3–5.8(–7) cm × 1–1.5(–1.8) mm, slightly 4-angled or terete, not striped; valves with somewhat prominent midvein, pubescent outside, trichomes 2–4-rayed, glabrous inside; ovules 36–66 per ovary; style cylindrical, stout, 0.7–3 mm, moderately to sparsely pubescent; stigma strongly 2-lobed, lobes as long as wide. |
siliques [silicles], dehiscent, unsegmented, 4-angled, terete, or latiseptate, rarely angustiseptate; ovules [10–]15–100[–numerous] per ovary; style obsolete or distinct; stigma entire or 2-lobed. |
Seeds | ovoid, 1.2–1.7 × 0.8–1 mm; not winged or wing apiculate. |
biseriate or uniseriate; cotyledons usually accumbent, rarely incumbent. |
Trichomes | of leaves 2- or 3-rayed. |
sessile, stellate or malpighiaceous. |
2n | = 81. |
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Erysimum inconspicuum |
Brassicaceae tribe Erysimeae |
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Phenology | Flowering Apr–Aug. | |
Habitat | Calcareous talus and cliffs, roadsides, railroad embankments, abandoned fields, hillsides, alkaline ground, bluffs, crevices and ledges, gravel, prairies, rocky pastures, among brush, waste sites | |
Elevation | 100-2700 m (300-8900 ft) | |
Distribution |
AK; AR; CO; ID; IL; IN; KS; ME; MI; MN; MO; MT; ND; NH; NV; NY; OH; OK; OR; SD; UT; WI; WY; AB; BC; MB; NS; ON; QC; SK; YT
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North America; Mexico; Central America; Europe; Asia; n Africa; Atlantic Islands (Macaronesia) |
Discussion | Erysimum inconspicuum is known in Yukon from Raup & Correll 11255 (A), which was collected 7 miles east of Little Atlin Lake, and Malte s.n. (GH), which was collected from Dawson on 10 August 1916. Most of the other collections from Yukon identified as E. inconspicuum belong to E. coarctatum. The record from Quebec is based on Cayouette J80-8 (GH), from Cté de Charlevoix, and Victorin, Germain, & Meilleur 43128 (GH), from Du Lac-Saint-Jean. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Genus 1, species ca. 150 (19 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 541. | FNA vol. 7, p. 533. |
Parent taxa | Brassicaceae > tribe Erysimeae > Erysimum | Brassicaceae |
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Subordinate taxa | ||
Synonyms | E. asperum var. inconspicuum, Cheiranthus inconspicuus, Cheiranthus syrticola, Cheirinia inconspicua, Cheirinia parviflora, Cheirinia syrticola, E. asperum var. parviflorum, E. inconspicuum var. syrticola, E. syrticola | |
Name authority | (S. Watson) MacMillan: Metasp. Minnesota Valley, 268. (1892) | Dumortier: Fl. Belg., 123. (1827) |
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