Common Hemp-nettle
Scientific name: Galeopsis tetrahit L.
Diagnostic features
Stems erect, to 1m.
Leaves narrowly ovate to ovate.
Calyx 12-14mm.
Corolla 13-20(25)mm, pinkish-red with darker lines and blotches on lower lip, the darker markings falling well short of tip of terminal lobe, often white but perhaps never yellow.
Terminal lobe of lower lip of corolla entire to very slightly emarginate, ± flat.
Chromosome number: 2n=32.
Habitat
Native; arable land, rough ground, woodland clearings, damp places.
Distribution
Common over most of Britain and Ireland, rare in Channel Islands.
This species is keyed out on Page 3167 in the Text Key.
Hybrids
- Galeopsis x ludwigii Hausskn. (= Galeopsis tetrahit x Galeopsis bifida) is intermediate in corolla shape and has 20-70 per cent pollen fertility and low seed-set; it has been recorded from Wales and Central England, but is probably frequent. |
