Myagrum perfoliatum
Sp. Pl. 2: 640. 1753.
IntroducedIllustrated
Treatment appears in FNA Volume 7. Treatment on page 569.
Stems branched at or distal to middle, rigid, 2–5(–6) dm. Basal leaves (withered by anthesis); shortly petiolate; blade oblanceolate, 2–7 cm × 5–15 mm. Cauline leaves sessile; blade oblong to lanceolate, (1–)1.5–6(–8)cm × (3–)5–20(–25) mm (smaller distally), apex acute or obtuse. Fruiting pedicels 3–5 mm, (much wider distally, hollow). Flowers: sepals 2.5–3.5 × 0.6–1.4 mm; petals 3–5 × 0.7–1.4 mm, base attenuate; filaments 2.5–3.7 mm; anthers 0.5–0.7 mm. Fruits 4.5–7.5(–8.5) × 2.5–4.5(–5) mm; style (0.8–)1.2–2 mm. Seeds 2–3 × 1–2 mm. 2n = 14.
Phenology: Flowering Apr–Jun.
Habitat: Roadsides, waste grounds, disturbed sites
Distribution
Introduced; Tex., Va., s Europe, sw Asia, introduced also in nw, s Africa, Australia.
Discussion
Selected References
None.
Lower Taxa
None.