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common hedge-mustard, common tumble-mustard, hedge mustard

Mediterranean rocket, wallflower tumble mustard

Habit Annuals; glabrous or pubescent. Annuals; glabrous or pubescent.
Stems

erect, branched distally, 2.5–7.5(–11) dm, usually sparsely to densely hirsute, (trichomes retrorse), rarely glabrate distally.

erect, unbranched or branched distally, (1–)2–6(–8) dm, glabrous or sparsely pilose at least basally, usually glabrous distally.

Basal leaves

usually rosulate;

petiole (1–)2–7(–10) cm;

blade broadly oblanceolate or oblong-obovate (in outline), (2–)3–10(–15) cm × (10–)20–50(–80) mm, margins lyrate-pinnatifid, pinnatisect, or runcinate;

lobes (2)3 or 4(5) on each side, oblong or lanceolate, smaller than terminal lobe, margins entire, dentate, or lobed, (terminal lobe suborbicular or deltate, margins dentate).

(soon withered);

not rosulate;

petiole (0.5–)1–4(–6) cm;

blade broadly ovate to obovate or broadly oblanceolate, 2–8(–10) cm × 10–30(–50) mm, margins lyrate-pinnatipartite;

lobes 2–4 on each side, oblong or lanceolate, smaller than terminal lobe, margins subentire or dentate, (terminal lobe ovate, margins dentate).

Cauline leaves

similar to basal;

blade with lobe margins dentate or subentire.

similar to basal, (distalmost with shorter petiole);

blade smaller, margins dentate, lobes 1–3 on each side.

Flowers

sepals erect, oblong-ovate, 2–2.5 × ca. 1 mm;

petals spatulate, 2.5–4 × 1–2 mm, claw 1–2 mm;

filaments (erect, yellowish), 2–3 mm;

anthers ovate, 0.3–0.5 mm.

sepals ascending, oblong, 1.5–2(–2.5) × 0.8–1.5 mm;

petals pale spatulate, 1.4–2(–2.5) × 0.2–0.5 mm, claw ca. 0.5 mm;

filaments 1.7–2.5(–3) mm;

anthers ovate, 0.1–0.2 mm.

Fruiting pedicels

erect, (appressed to rachis), stout, narrower than fruit, 1.5–3(–4) mm.

divaricate, stout, nearly as wide as fruit, 1–2(–3) mm, (pilose adaxially).

Fruits

(erect), subulate-linear, straight, slightly torulose or smooth, stout, (0.7–)1–1.4(–1.8) cm × 1–1.5 mm;

valves glabrous or pubescent;

ovules 10–20 per ovary;

style (0.8–)1–1.5(–2) mm;

stigma slightly 2-lobed.

narrowly linear, straight, obscurely torulose, stout, (1.7–)2–4.5(–5.2) cm × 0.9–1.2 mm;

valves glabrous;

ovules 30–46(–54) per ovary;

style (slender) 0.5–1(–2) mm;

stigma prominently 2-lobed.

Seeds

1–1.3 × 0.5–0.6 mm.

0.9–1.3 × 0.4–0.6 mm.

2n

= 14.

= 14.

Sisymbrium officinale

Sisymbrium erysimoides

Phenology Flowering Apr-late Sep. Flowering Jan–Oct.
Habitat Roadsides, fields, pastures, waste grounds, deserts Waste grounds, abandoned fields, disturbed sites
Elevation 0-2200 m (0-7200 ft) 300-1900 m (1000-6200 ft)
Distribution
from FNA
AK; AL; AR; CA; CT; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; NH; NJ; NM; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; AB; BC; MB; NB; NF; NS; NT; ON; PE; QC; YT; Europe; Asia; n Africa [Introduced in North America; introduced also in Central America, South America, Australia]
[WildflowerSearch map]
[BONAP county map]
from USDA
Europe [Introduced, Calif.; introduced also in South America (Argentina), Australia]
[BONAP county map]
Discussion

Sisymbrium erysimoides apparently is naturalized in the flora area in Riverside County.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 7, p. 670. FNA vol. 7, p. 669.
Parent taxa Brassicaceae > tribe Sisymbrieae > Sisymbrium Brassicaceae > tribe Sisymbrieae > Sisymbrium
Sibling taxa
S. altissimum, S. erysimoides, S. irio, S. linifolium, S. loeselii, S. orientale, S. polyceratium
S. altissimum, S. irio, S. linifolium, S. loeselii, S. officinale, S. orientale, S. polyceratium
Synonyms Erysimum officinale, S. officinale var. leiocarpum
Name authority (Linnaeus) Scopoli: Fl. Carniol. ed. 2, 2: 26. (1772) Desfontaines: Fl. Atlant. 2: 84. (1798)
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