分类
- 订单
- Nostocales
- 家庭
- Tolypothrichaceae
- 属
- Tolypothrix
的例子 Tolypothrix
400X total magnification; 10 μm scale bar.
400X total magnification; 10 μm scale bar.
400X total magnification; 10 μm scale bar.
形态
具有基部异细胞和游离顶端的异极细丝, with false branches arising just below the heterocytes; false branching is usually single, less frequently with double false branching; filaments usually flexuous. Uniseriate trichomes; slightly wider or narrower towards the ends in some species; unconstricted to slightly constricted at crosswalls. Sheaths thin or widened; sometimes lamellated; only one trichome in each sheath. Cells typically 圆柱; sometimes 筒状的 (usually near trichome ends); usually blue-green to olive-green; cell content sometimes with a few granules; terminal cells usually rounded, 有时会放大. 附着在衬底上的细丝, or floating if benthic colonies separate from the substrate and float to the surface; colonies sometimes in the form of bush-like or shrub-like clusters; in fascicles or tufts, 或者形成毛茸茸的垫子.
主要是基底细胞, at the bases of false branches; later intercalary as well; solitary or sometimes in short rows; spherical, 筒状的, 圆柱, 或圆盘状(扁平), 扁平的). 不厚壁孢子.
生态
水生的或陆上的，但更常见的是水生的. 水栖于未受污染的淡水泉中, 流, and alkaline swamps; attached to rocks or aquatic plants, 淹没在周围植物中, 或mat-forming. 匍匐在潮湿的石头、土壤或树皮上的.
参考文献
- 约翰森,J. R., & Komarek J. (2015). 丝状蓝藻. 在J. D. Wehr R. G. 护套, & J. P. Kociolek (Eds.), 北美淡水藻类:生态学和分类 (第二版., pp. 183-196). 马萨诸塞州沃尔瑟姆:爱思唯尔.
- Komarek J. (2013). Cyanoprokaryota-3. 第3部分:异细胞属(J. R. 约翰森,艾德.). 在B. Budel G. Gartner L. Krienitz, & M. Schagerl (Eds.), ßwasserflora von Mitteleuropa (卷. 19/3, pp. 427-429). 海德堡，德国:施普林格频谱公司.