Alliaria petiolata

(M. Bieberstein) Cavara & Grande

Bull. Orto Bot. Regia Univ. Napoli 3: 418. 1913

Synonyms: Alliaria officinalis Andrzejowski ex M. BiebersteinErysimum alliaria Linnaeus
Basionyms: Arabis petiolata M. Bieberstein
Treatment appears in FNA Volume 7. Treatment on page 745.
Click plate for higher resolution version.
Stems simple or branched distally, (1.5–)3–9(–13) dm; glabrous or pilose basally, trichomes to 1.5 mm. Basal leaves: petiole 3–16(–22) cm; blade reniform or cordate, (6–)15–88(–118) mm wide (shorter in length), surfaces glabrous or pilose. Cauline leaves: petiole shorter than basal; blade ovate, cordate, or deltate, to 15 × 15 cm, base cordate or truncate, margins acutely to obtusely toothed, apex acute. Racemes several-flowered. Fruiting pedicels terete, (2–)3–10(–15) mm. Flowers: sepals (2–)2.5–3.5(–4.5) × 0.7–1.5 mm; petals (2.5–)4–8(–9) × (1.5–)2–3(–3.5) mm, base attenuate to clawlike; filaments 2–3.5(–4.5) mm; anthers oblong, 0.7–1 mm. Fruits divaricate-ascending, subtorulose, quadrangular or subterete, (2–)3–7(–8) cm × 1.2–2.5 mm; style (0.2–)1–2(–3) mm. Seeds dark brown or black, narrowly oblong, 2–4.5 × 0.7–2 mm. 2n = 42.

Phenology: Flowering Apr–May.
Habitat: Roadsides, trails, railroad tracks, stream banks, waste places, fields, shaded woodlands, bluffs, thickets, steep slopes, disturbed fields, floodplains, woods, shaded forest floor
Elevation: 0-1200 m

Distribution

V7 1311-distribution-map.gif

B.C., Ont., Conn., Del., D.C., Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Mo., Nebr., N.H., N.J., N.Y., N.C., Ohio, Okla., Oreg., Pa., R.I., Tenn., Utah, Vt., Va., Wash., W.Va., Wis., South America (Argentina), Eurasia, n Africa.

Discussion

References

None.

Lower Taxa

No lower taxa listed.