Morphologie du trichome desTeucriumdu Liban

Micromorphological investigation on the trichome in leaves stems, calyxes and corolla in Teucrium L. species (T. creticum L., T. divaricatum Sieb. ex Heldr. subsp. villosum (Celak.) Rech. f, T. lamiifolium Urv. subsp. stachyo- phyllum (P.H. Davis) Hedge & Ekim, T. montbretii Benth. subsp. libanoticum P.H. Davis, T. orientale L. var. orientale and T. polium L.) distributed in Lebanon was carried out as part of the taxonomical study of the genus Teucrium. Twenty different types of trichome (13 non-glandular, 7 glandular) were found on the six studied species. Thirteen types were characteristic for one species and three types were characteristic of two species. Only four types were found on the six studied species. On the twenty different types of trichome, twelve non—glandular hairs and only four glandular hairs were characteristic of one or two species. Those results indicate that non—glandular hairs are more important than glandular hairs concerning the separation between Teucrium species. This s...