英文摘要 |
Blue-green endophytes, belonging to the genus Anabaena, are found with considerable regularity as symbionts in AzelIa. The genus AzelIa, though a small one, has representatives in all the divisions of the globe (Campbell 1893). This small floating water fern forms a magenta blanket which covers the ponds and ditches in my native land each fall and winter. The plants which grow in Taiwan are similar to those found in the Lower Yangtze Valley (Eastern China), but these seldom turn red. Although Azolla is distributed all over the world and its endophytic. Anabaena always lives in symbiotic relation with it, yet its morphology, taxonomy and relationship is still not clear. |