Hesperis matronalis
Sp. Pl. 2: 663. 1753.
Stems unbranched basally, often branched distally, 4–8(–11) dm, often eglandular, glabrous distally. Basal leaves withered by flowering, long-petiolate. Cauline leaves short-petiolate; blade narrowly oblong, lanceolate, or broadly ovate, (2–)4–15(–20) cm × (4–)8–40(–60) mm, base cuneate, margins denticulate or entire, apex acute or acuminate, surfaces pubescent. Fruiting pedicels (5–)7–17(–25) mm. Flowers: sepals 5–8 × 1.5–2 mm; petals (13–)15–20(–22) × 3.5–9 mm, claw 6–12 mm; filaments 2.5–6 mm; anthers 2.5–4 mm. Fruits (4–)6–10(–14) cm × 2–2.5 mm. Seeds (2.5–)3–4 × 1–1.5 mm. 2n = 24.
Phenology: Flowering Apr–Jul.
Habitat: Gardens, roadsides, oak glades, waste areas, bluffs, floodplains, abandoned fields, railroad embankments, thickets, woodland
Elevation: 0-2200 m
Distribution
Introduced; Alta., B.C., Man., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que., Sask., Ark., Calif., Colo., Conn., Del., D.C., Idaho, Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Minn., Mo., Mont., Nebr., Nev., N.H., N.J., N.Y., N.C., N.Dak., Ohio, Oreg., Pa., R.I., S.Dak., Tenn., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., se Europe, c, sw Asia, n Africa, introduced also in South America (Argentina, Chile).
Discussion
Selected References
None.