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

London hedge-mustard, London rocket

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

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

erect, branched proximally and distally, (1–)2–6(–7.5) dm, glabrous or sparsely pubescent at least basally.

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).

not rosulate;

petiole (0.5–)1–4.5(–6) cm;

blade oblanceolate or oblong (in outline), (1.5–)3–12(–15) cm × (5–)10–60(–90) mm, margins runcinate to pinnatisect;

lobes (1–)2–6(–8) on each side, oblong or lanceolate, smaller than terminal lobe, margins entire, dentate, or lobed.

Cauline leaves

similar to basal;

blade with lobe margins dentate or subentire.

similar to basal; (distalmost) blade (smaller, to 2 cm wide), margins entire or 1–3-lobed.

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 erect, oblong, 2–2.5 × 1–1.5 mm;

petals oblong-oblanceolate, 2.5–3.5(–4) × 1–1.5 mm, claw 1–1.5 mm;

filaments 2.5–4 mm;

anthers ovate, 0.5–0.9 mm.

Fruiting pedicels

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

divaricate or ascending, slender, much narrower than fruit, (5–)7–12(–20) mm.

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.

(divaricate to ascending, young fruits overtopping flowers), narrowly linear, straight or slightly curved inward, slightly torulose, slender, (2.5–)3–4(–5) cm × 0.9–1.1 mm;

valves glabrous;

ovules 40–90 per ovary;

style 0.2–0.5 mm;

stigma prominently 2-lobed.

Seeds

1–1.3 × 0.5–0.6 mm.

0.8–1 × 0.5–0.6 mm.

2n

= 14.

= 14.

Sisymbrium officinale

Sisymbrium irio

Phenology Flowering Apr-late Sep. Flowering Dec–May.
Habitat Roadsides, fields, pastures, waste grounds, deserts Rocky slopes, orchards, roadsides, fields, pastures, waste grounds, prairies, disturbed sites
Elevation 0-2200 m (0-7200 ft) 0-1700 m (0-5600 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 FNA
AZ; CA; CO; CT; FL; ID; MA; MI; NM; NV; OH; PA; TX; UT; WY; Europe; w Asia; c Asia; n Africa [Introduced in North America; introduced also in South America, Australia]
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 7, p. 670. FNA vol. 7, p. 670.
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. erysimoides, 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) Linnaeus: Sp. Pl. 2: 659. (1753)
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