TABLE 1.
Summary of vegetative cell and stomatocyst morphological characteristics of Spumella.
| Taxon | Strain | Cell morphology |
Stomatocyst morphology |
||||||
| Shape | Width (μm) | Length (μm) | Short flagellum (μm) | Long flagellum (μm) | Shape | Width (μm) | Length (μm) | ||
| S. vulgaris c | 199 hm | Spherical, elongated or posteriorly pointed shape | 3.2–5.9 in diameter | 0.7–1 times as long as the cell body | Twice as long as the cell body | Spherical with slightly conical collar and flat planar annulus around the pore | 6.1–9.5 in diameter | ||
| S. benthica a | Hawrim032418A5 | Circular(13), Widely elliptic(7), Widely obovate(1), Elliptic(3), Obovate(1) | 2.7–4.8 | 3.3–5.4 | 1.4–3.0 | 2.8–6.7 | |||
| S. bureschii a | Baekdongje012018B8 | Circular(19), Widely elliptic(4), Elliptic(1), Obovate(1) | 3.5–6.2 | 3.8–6.9 | 1.8–4.3 | 4.5–10.9 | |||
| S. bureschii b | JBL14 | Spherical, elongated or posteriorly pointed shape | 2.9–7.4 in diameter | − | Up to 14.2 | Spherical to slightly oval with rounded collar apex with outer collar margin connected to stomatocyst body | 5.17–8.09 in diameter | ||
| S. communis a | Meonmulgak032418A6 | Circular(17), Very widely obovate(1), Widely elliptic(5), Widely obovate(2), Elliptic(2) | 2.4–4.9 | 3.0–5.4 | 1.6–4.2 | 4.2–11.0 | |||
| S. lacusvadosi a | Dongmak102320A2 | Circular(17), Very widely obovate(5), Very widely ovate(2), Widely elliptic(1) | 2.2–4.7 | 2.9–4.8 | 1.0–3.2 | 3.1–7.7 | |||
| S. lacusvadosi b | JBNZ39 | Spherical, elongated or posteriorly pointed shape | 1.5–7.1 in diameter | – | 0.7–10.4 | ||||
| S. longicolla a | Yangrim041319B6 | Circular(23), Widely elliptic(2) | 3.7–8.5 | 4.0–9.1 | 1.6–3.1 | 4.1–9.8 | Spherical (15) with cylindrical, long and thick collar | 5.7–6.8 | 5.0–6.3 |
| S. oblata a | Sanggul120118B3 | Circular(21), Widely elliptic(2), Elliptic(2) | 2.5–4.3 | 2.5–4.9 | 1.5–3.4 | 2.4–7.9 | Oblate (10) with thickened rim of round marginal collar apex | 4.9–5.6 | 3.9–4.5 |
| S. rotundata a | Woeam021018A5 | Circular(21), Widely elliptic(3), Elliptic(1) | 2.0–5.8 | 2.3–5.8 | 2.0–3.6 | 4.7–9.1 | Spherical (11) with thickened rim of round marginal collar apex. | 5.0–5.8 | 4.5–5.4 |
| S. rivalis c | AR4A6 | Spherical, elongated or posteriorly pointed shape | 2.7–3.9 in diameter | 0.7–1 times as long as the cell body | 2 times as long as the cell body | Spherical with low rounded marginal rim collar | 3.91–6.1 in diameter | ||
| S. similis a | Gwanje012018A2 | Circular(21), Widely elliptic(3), Widely obovate(1) | 3.8–5.5 | 4.0–6.5 | 1.9–3.4 | 4.8–8.8 | |||
| S. sinechrysos a | Hwarim032418A7 | Circular(19), Widely elliptic(5), Widely obovate(1) | 3.0–5.8 | 3.2–5.7 | 2.0–3.5 | 4.0–7.2 | |||
The numbers in parentheses indicate the investigated number of cells (This study,a Findenig et al., 2010;b Grossmann et al., 2016c).