Medicinal and Aromatic Plants III pp 339-352
Pelargonium spp. (Geranium): In Vitro Culture and the Production of Aromatic Compounds
The genus Pelargonium is a member of the family Geraniaceae in which grouping are also included the genera Geranium, Erodium, Monsonia and Sarcocaulon. The vast majority of the 250 or so natural species of Pelargonium derive from South Africa, although a few species are native to Australia, East Africa and Syria. The genus is subject to large morphological diversity and, for descriptive purposes, has been subdivided into 15, or sometimes 16, sections (or subgenera) based on leaf and flower characteristics and on habitat. The leaves of many of the species and numerous artificial hybrids are scented, and members of the subgenera Pelargonium, Cortusina and Polyactium appear to be especially rich in essential oil (Webb 1984).
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