| Scientific name: | Sinapis arvensis L. | |
| Synonym name: | Brassica arvensis (L.) Rabenh., Eruca arvensis (L.) Noulet, Raphanus arvensis (L.) Crantz, Rhamphospermum arvense (L.) Andrz. ex Besser | |
| Swedish name: | Åkersenap | |
| German name: | Acker-Senf | |
| Nederlandse naam: | Herik | |
| English name: | Charlock, Charlock Mustard, Corn Mustard, Corn-Mustard, Field Mustard, Wild Mustard | |
| Plant Family: | Cruciferae / Brassicaceae, Mustard family, Korsblommiga växter |
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| Life form: | Therophyte, annual | |
| Stem: | To 1 (1.5)n , simple to well branched, glabrous to hispid | |
| Leaves: | Alternate, lobed, dissected, dentate or serrate | |
| Flowers: | 4 Yellow petals | |
| Flowering Period: | June, July, August, September, October | |
| Fruits: | Pods 3 to 5 cm in length, usually hairless, with a short thick stalk, with valves that are strongly three-nerved and split lengthwise at maturity, the pod is terminated by a flattened beak, which usually has one to two seeds; seeds are black-purplish. | |
| Habitat: | Farmland |
Derivation of the botanical name: Sinapis, sinapi, Latin name for the mustard plant, from the flavor of the seeds. arvensis, arvum, field, cultivated land, plowed land; of cultvated fields. Brassica, the classical Latin name for cabbage. Erucaria, Latin, eruca, rocket, cruciformous herb; arius, Latin suffix, pertaining to. Raphanus, Greek raphanos, "quick-appearing" because of the rapid germination of the seeds. Rhamphospermum, rhamph- or rhampho- combining form Greek rhamphos, akin to rhabdos, rod : beak; spermum, seeded.
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