Name: Galeopsis speciosa Mill.
Croatian name: Naočiti šupljozub
English name: Large Hemp Nettle
Annual, up to 1m high herbaceous plant. Can be found in woodland, prefers moist acid soil and semi-shade.
The stem is angular, swollen under nodes. All parts of the plant are covered with hairs.
Leaves are ovate, pointed, with dentate margins.
Calyx tubular, haired. Corolla 2.5 to 3 cm long,; yellow upper lips and violet lower lip. Side lips have three lobes with two horn-like projections. The flowers are clustered in whorls. Flowers from July to September.
Fruit: nutlet (single seeded).
NB. The plant is described as poisonous, has some use as medicinal plant. Oil derived from the seeds is used as leather polish.