您要查找的是不是：
- Larcospira quadrangulan. 四角旋篮虫
- In a population originated from 10 individuals,the population growth curve of C. quadrangula was shown to be logistic and may be expressed asin which y denotes total number of individuals and t, days. 从初始10个个体的种群计算，种群生长曲线呈Logistic型，可以如下表达式中y表示总个体数，t表示时间（d）。
- Larcospira minorn. 小旋篮虫
- Genus Larcospiran. 旋篮虫属
- Nitzschia quadrangulan. 四菱菱形藻
