Resumo

FREIRE, SUSANA E.; URTUBEY, ESTRELLA  e  GIULIANO, DANIEL A.. EPIDERMAL CHARACTERS OF BACCHARIS(ASTERACEAE) SPECIES USED IN TRADITIONAL MEDICINE. Caldasia [online]. 2007, vol.29, n.1, pp.23-38. ISSN 0366-5232.

A morphological study of 38 of Baccharis species used in traditional medicine was carried out to provide some epidermal characters that will contribute to the knowledge of the genus. The present study revealed: 1) seven different types of trichomes: conical, aseptate flagellate, filiform flagellate, 1-armed, 2-4-armed, bulbiferous flagellate, and glandular biseriate; 2) that 28 of the total of 38 species have trichomes in tufts; 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 flagellate branched (B. trinervis), show a high diagnostic value; 5) that the stomata types can be used to differentiate species with similar trichomes type (e.g. B. trimera and B. articulata). Illustrations of the studied characters are provided.

Palavras-chave : Baccharis; Compositae; medicinal species; stomata; trichomes.

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