念珠藻属Nostoc三个种早期发育的初步研究
A Preliminary Study on the Early & Stage Development of Three Species of Nostoc
与大多数蓝绿藻一样，念珠藻属含有两种色素，并有固定氮的能力。
Like most other cyanobacteria , nostocs contain two pigments and are capable of nitrogen fixation .
念珠藻属