Anatomic studies on leaves from three plants of Goniothalamus (Bl.) Hook. f. et Thoms.
- VernacularTitle:三种哥纳香属药用植物叶的比较解剖研究
- Author:
Sheng ZHAO
;
Tongxing SUN
;
Bingtao LI
;
Hong WU
;
- Publication Type:Journal Article
- Keywords:
Goniothalamus (Bl.) Hook. f. et Thoms.;
leaf;
comparative anatomy
- From:
Chinese Traditional and Herbal Drugs
1994;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Object To study the botanic characteristics of leaves from three plants of Goniothalamus (Bl.) Hook. f. et Thoms. in order to correctly distinguish them from numerous plants of the genus, which are important resource of anticancer medicine.Methods The maceration method and paraffin method were used to study the epidermis and structures of leaves from G. griffithii Hook. f. et Thoms., G. leiocarpus (W. T. Wang) P. T. Li and G. yunnanensis W. T. Wang. Results Three leaves were morphologically similar in the structure, but there were some anatomical differences among them. For example, the absence of druses in the epidermis and the presence of fibrous sclereids in the lamina mesophyll of leaves from G. griffithii, while the presence of druses in epidermis and the absence of fibrous sclereids in lamina mesophyll of the leaves from G. griffithii and G. yunnanensis were observed. In addition, epidermal hairs of G. griffithii were composed of three cells, stomatas were always normal, there were seven oil cells and 25 mucilage cells per mm leaf width in lamina mesophyll and the vascular tissue of the midrib consisting of ten small bundles. However, epidermal hairs of G. yunnanensis were composed of two cells, many abortive stomatas were present at the distal surface, there were only four oil cells and 16 mucilage cells per mm leaf width and the vascular tissue of the midrib consisted of 12 small bundles.Conclusion Three species were easily identified on the basis of epidermal and structural characters of the leaves of them.
