MORPHOLOGY AND DISTRIBUTION OF TRICHOMES IN 2 ENDEMIC TEUCRIUM SPECIES OF MACARONESIA

The morphology and the distribution of the trichomes on the vegetative and reproductive organs of two endemic Teucrium species of Macaronesi a (T. betonicum and T. heterophyllum) were studied by SEM. Both specie s pos sess an indumentum constituted by long, morphologically differen t non-glandular trichomes and three types of glandular ones, different ly distributed, depending on the organ studied. The particular distrib ution of the glandular trichomes on the inner surface of the corolla a nd on the anther filament seems to be of taxonomical importance.