A large number of plant species has wonderful citrus scent, or just a pleasant hint lemon fragrance. Leaves, flowers, needles, cones or wood can be the source of original material. Some plants are old favourites, such as lemon balm (Melissa officinalis), lemon thyme (Thymus×citriodorus), lemon mint (Monarda citriodora) and various Citrus species. This review gives a summary of both established and new species on the world market, with detailed description of five more unusual representatives of this group, including the chemicals responsible for the lemon scent.

Lovage is an aromatic and medicinal herb, which grows easily in the UK. At present, it does not hold a large share of any market, but it has a variety of uses from landscaping and culinary to cosmetic and medicinal. In order to introduce a new crop successfully, its properties, both desirable and undesirable, should be evaluated. Very little information regarding the aboveground parts of lovage appears in the literature, which instigated an investigation into this area. This article presents data from both previous research and our experiments. Our experiments dealt with the oil yield, composition and toxicity of the aboveground parts of lovage, grown at experimental plots at Auchincruive, plus an anatomical investigation of the secretory structures.