- To .75m tall, glabrous, herbaceous, erect, branching above near inflorescence, ribbed, somewhat purplish near base, single or numerous from roots. Roots thickened.
- Basal leaves in rosette, spatulate, oblong, or narrowly obovate, glabrous, very shallowly toothed or lobed, to +8cm long, 2cm broad, soon wilting. Petiole winged. Cauline leaves alternate, clasping, lanceolate to lanceolate-oblong, glabrous, +/- 6cm long, 2cm broad, coarsely toothed or lobed, auricles pointed.
- Compact terminal racemes, elongating in fruit to +30cm tall(long).
- Petals 4, white, clawed, to 4mm long, 1.5mm broad, glabrous. Stamens 6, divided into 2 sets of 3 on either side of flattened ovary, included to equaling corolla. Stigma sessile. Sepals 4, free, spreading to erect in flower, with whitish-yellow margins, 2mm long, +1mm broad, ovate, typically glabrous. Pedicels to 1cm long in flower, greatly increased in fruit. Silicles, to +15mm long and wide, with small notch at apex, on pedicels to +2cm long, glabrous, with numerous seeds.
- This is one of the most easily recognized members of the
because of its large and plentiful fruits which have the characteristic "cabbage" flavor when chewed. Like most of the other introduced members of this family, it is abundant.
Photographs taken at the Kansas City Zoo, 5-11-00, and at Danville Conservation Area, Danville, MO., 4-1-04 and 5-3-04.
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This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each weed list, or click here for a composite list of
Weeds of the U.S.
Linnaeus, Sp. Pl. 2: 646. 1753.
Fanweed, field pennycress, stinkweed
(sometimes glaucous), glabrous throughout.
not rosulate; petiole 0.5-3 cm; blade oblanceolate, spatulate, or obovate, 1-5 cm × 4-23 mm, base attenuate or cuneate, margins entire, repand, or coarsely dentate, apex rounded.
blade oblong, (0.5-)1.5-4 (-8) cm × (2-)5-15(-25) mm, apex rounded, obtuse, or subacute.
straight or slightly upcurved, (5-)9-13(-15) mm.
sepals (1.5-) 2-3(-3.3) × 1-1.5 mm; petals (2.4-)3-4.5(-5) × (0.8-) 1.1-1.7 mm, narrowed to clawlike base (ca. 1 mm), apex obtuse or emarginate; filaments (1-)1.5-2.2 mm; anthers 0.3-0.5 mm.
obovate or suborbicular, (0.6-)0.9-2 cm × (5-)7-20 mm, base obtuse or rounded, apex deeply emarginate, notch ca. 5 mm deep; wings broad throughout, 1-1.5 mm wide basally, 3.5-5 mm wide apically; ovules 6-16 per ovary; style 0.1-0.3 mm.
(1.2-)1.6-2(-2.3) × 1.1-1.3 mm, concentrically striate.
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