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

false London rocket, Loesel's tumble-mustard, rocket, small tumblemustard, small tumbleweed mustard, tall hedge-mustard

Habit Annuals; glabrous or pubescent. Annuals; densely hispid at least proximally.
Stems

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

erect, branched distally, (2–)3.5–12(–17.5) dm, often densely hispid proximally, (trichomes retrorse), 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).

rosulate;

petiole 1–4(–5) cm;

blade broadly oblanceolate (in outline), (1.5–)2.5–8(–12) cm × (10–)20–50(–70) mm, margins runcinate to lyrate-pinnatifid;

lobes 2–4 on each side, much smaller than terminal lobe, margins entire or dentate, (terminal lobe triangular, often hastate).

Cauline leaves

similar to basal;

blade with lobe margins dentate or subentire.

similar to basal;

blade (much smaller than basal, to 1.5 cm wide), margins entire or toothed.

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, 3–4 × 1–1.5 mm;

petals spatulate, 6–8 × 2–3 mm, claw 2.5–3.5 mm;

filaments 3–4.5 mm;

anthers ovate, 0.6–1 mm.

Fruiting pedicels

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

divaricate or ascending, slender, narrower than fruit, 5–12(–15) 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.

(ascending to suberect, young fruits not overtopping flowers), narrowly linear, curved or straight, subtorulose, slender, 2–3.5(–5) cm × 0.9–1.1 mm;

valves often glabrous;

ovules 40–60 per ovary;

style stout, 0.3–0.7 mm;

stigma prominently 2-lobed.

Seeds

1–1.3 × 0.5–0.6 mm.

0.7–1 × 0.5–0.6 mm.

2n

= 14.

= 14.

Sisymbrium officinale

Sisymbrium loeselii

Phenology Flowering Apr-late Sep. Flowering late May-early Nov.
Habitat Roadsides, fields, pastures, waste grounds, deserts Valleys, stream banks, fields, roadsides, pastures, waste grounds, vacant lots, prairies, disturbed sites, railroad tracks
Elevation 0-2200 m (0-7200 ft) 0-2400 m (0-7900 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
CO; CT; IA; ID; IL; IN; MA; MI; MT; ND; NE; NM; NV; OH; OR; PA; SD; UT; VT; WA; WY; AB; BC; MB; NB; QC; SK; e Europe; w Asia; c Asia [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
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. erysimoides, S. irio, S. linifolium, 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: Cent. Pl. I, 18. (1755)
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