Table 1.
Morphological outlines of LxSd1, Pseudodidymocystis species, and Hylodesmus singaporensis.
| Cell size* (µm) | Autospore | Chloroplast | Outer ornament† | References | |
|---|---|---|---|---|---|
| LxSd1 | φ 7–30 | 4–16 | Split lobes or net-like | none | This study |
| P. planctonica | 4.2–8.8 × 2.5–4.2 | 2 | Discoid | none | 23 |
| P. fina | 4.5–7.5 × 2.5–3.6 | 2 | n.d. | none | 23 |
| P. inconspicua | 5–9.5 × 1.6–4 | 4 | Parietal | Longitudinal ribs | 25 |
| P. lineata | 4.8–9.2 × 3.5–4.4‡ | 2 | n.d. | Longitudinal ribs | 24,25 |
| H. singaporensis | φ 4.2–11 | 2–16 | Girdle | Ribs | 4 |
*In one instance of culture. †Only stand out structures. Besides, Pseudodidymocystis is characterized by having a sporopollenin cell wall layer. Cell walls usually are smooth, but often granulated and/or covered with mucilage. ‡Measured from the figure of Hindák25. n.d., not determined.