A preliminary morphological and anatomical study of the stem and leaf of Acanthospermum australe (Loefl.) Kuntze (Asteraceae-Heliantheae)

Revista Brasileira de Farmacognosia

Martins, Lúcia R. Rocha¹  Dias-Filho, Benedito P.¹  Nakamura, Celso V.¹  Cortez, Diógenes A. Garcia¹  Mourão, Káthia S. Mathias¹  Albiero, Adriana L. Meyer¹  Universidade Estadual de Maringá, Maringá, Brasil¹ 

关键词: Acanthospermum australe;    structural aspects;    vegetative organs;    diagnose.;   

DOI  :  10.1590/S0102-695X2006000100009

来源: Sociedade Brasileira de Farmacognosia

【 摘 要 】

Preliminary morphological and anatomical descriptions of stem and leaf of Acanthospermum australe (Loefl.) Kuntze were made in fresh and fixed material. Cross and superficial sections, stained with safranin/astra blue and Toluidine blue were analyzed at the light microscopic and the images were acquired by means the program Image Pro-Plus, version 4.0 (Media Cybertecnics). The surface of the stem and leaf were observed through scanning electronic microscopy. The species presents in the stem and leaf surface multicellular nonglandular trichome, uniseriate with a pointed edge and multicellular glandular trichome like a disk with a unicellular peduncle, in which is attached a series of five cells. The leaf presents anomocytic stomata in both surfaces a little prominent in relation to the level of the epidermal cells. The stem presents an initial secondary growth with evident secretory ducts in the cortex and pith.

【 授权许可】

Unknown