Epidermal characters of Baccharis (Asteraceae) species used in traditional medicine.

S. E. FREIRE; E. URTUBEY; D. GIULIANO

CALDASIA

Instituto de Ciencias Naturales, Facultad de Ciencias-Universidad Nacional de Colombia

Lugar: Bogota; Año: 2007 p. 23 - 38

0366-5232

A morphological study of 38 species used in traditional medicine was carried outto provide some epidermal characters that will contribute to the knowledge of thegenus. The present study revealed: 1) seven different types of trichomes: conical,aseptate fl agellate, fi liform fl agellate, 1-armed, 2-4-armed, bulbiferous fl agellate,and glandular biseriate; 2) that 28 of the total of 38 species have trichomes intufts; 3) six different types of stomata: anomocytic, anisocytic, cyclocytic, actinocytic,tetracytic, and staurocytic; 4) that some trichome types, such as 2-4-armed(B. dracunculifolia) and aseptate fl agellate branched (B. trinervis), show a highdiagnostic value; 5) that the stomata types can be used to differentiate specieswith similar trichomes type (e.g. B. trimera and B. articulata). Illustrations of thestudied characters are provided