利用光镜、扫描电镜对狗娃花属(Heteropappus)7种植物的花粉形态和结构进行了观察研究.发现该属植物花粉粒为近球形或长球形,3孔沟......

A new compound, named heteraltaic acid was isolated from the flowers of Heteropappus altaicus (willd) Novopokr.. The com......