[Microscopic identification study of western herbs. Part I: Three Echinacea-species roots].
OBJECTIVE
To make microscopic identification research of three Echinacea-species roots recorded in the United States Pharmacopeia.


METHODS
The root transverse section and powder of E. angustifolia, E. pallida, and E. purpurea were observed. The main microscopic features were photographed.


RESULTS
The main microscopic features of transverse section and powder in three Echinacea-species roots are basically similar, except for some diagnostic differences. The results provide reliable reference for the authentication of raw materials of western herbal studies.
Li
Qin
Q
School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong, China.
Chu
Chu
C
Tan
Zhenfeng
Z
Wang
Yaqiong
Y
Wei
Jiafu
J
Li
Ping
P
Zhao
Zhongzhen
Z
D020900:Echinacea / Q000033:anatomy & histology / Q000166:cytology*; D008853:Microscopy; D018517:Plant Roots / Q000033:anatomy & histology / Q000166:cytology*; D014481:United States