| | | | | | |
---|---|---|---|---|---|---|
Habitat | 6–15-m depth of subtidal zone | Intertidal zone | Low intertidal zone | Low intertidal to 5-m depth of subtidal zone | Upper to middle intertidal zone | Middle intertidal to 5-m depth of subtidal zone |
Color | Fire red, pink | Yellowish brown, pale-green toward the base | Purple, greenish red, brownish red | Bright red, brownish red | Yellowish red, brownish red, greenish red | Brownish red, greenish red |
Shape | Narrow elliptic, elliptic, obovate, circular | Elliptical, linear, lanceolate | Round, ovate | Elliptical, obovate | Elliptical, round, ovate, obovate | Round, ovate, obovate, oblanceolate, reniform |
Basal shape | Cordate, rotund, navel | Round, cordate | Cordate | Cuneate, round | Cuneate, round, cordate | Cuneate, round, cordate, umbilicate |
Dentation | Absent | Absent | Absent | Absent | Absent | Absent |
Undulation | Present | Present | Present | Present | Present | Present |
Length (cm) | 13–25 | 20–40 (−55) | 7–9.5 | 6–10 | 4.5–20 (−40) | 3.5–13 |
Width (cm) | 6–13 | 5–15 | 6.5–9 | 4–8 | 1.5–9 | 1–9 |
Thickness (μm) | 24–47 | 30–56 | 40–50 | 20–27 | 20–40 | 35–60 |
Vegetative cell shape | Oblong, triangular, polygonal | Circle, rectangle | Circle, rectangle, triangle | Rectangle | Rectangle | Rectangle |
Vegetative cell size (μm) | 8–17 × 6–10 | 7–11 × 6–9 | 12–15 × 7–10 | 13–17 × 9–10 | 15–21 × 9–12 | 13–19 × 7–14 |
Basal cell shape | Capitate | Elliptic | Elliptic, capitate | Elliptical | Circle, elliptic | Circle, elliptical |
Basal cell size (μm) | 15–35 × 6–20 | 18–42 × 13–21 | 22–27 × 13–16 | 22–25 × 9–12 | 22–33 × 13–21 | 22–33 × 10–23 |
Projection of rhizoidal filaments | Both sides | Both sides | Both sides | One side | Both sides | Both sides |
Division formula of spermatangia | 4 × 4 × 8 | 4 × 2 × 8 | 4 × 2–4 × 4–8 | 4 × 2–4 × 4 | 4 × 2–4 × 4–8 | 4 × 2–4 × 8–16 |
Division formula of zygotosporangia | 2 × 2 × 4 | 2 × 2 × 2–4 | 2 × 2 × 4 | 2 × 1 × 2 | 2–4 × 1–2 × 2–4 | 2 × 2 × 4 |
Reference | This study, Kikuchi et al. | Kim and Kim | Hwang and Lee | Hwang and Lee | Hwang and Lee | Hwang and Lee |