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Table 2 Comparative features of the genera Exallosorus , Homoeostrichus , and Zonaria

From: Morphological and molecular characteristics of Homoeostrichus formosana sp. nov. (Dictyotaceae, Phaeophyceae) from Taiwan

 

Exallosorus

Homoeostrichus

Zonaria

No. of cell layers

4–6

2–4–7

4–12

No. of cortex / medulla in transverse section

1

1

2

Sporangia

Sorus

Single, Sorus

Sorus

No. of stalk cells

1

1 or more

0

No. of spores

4

4

8

Indusium

+

-

+

Paraphyses

+ or -

+ or -

+

Color

Brown

Brown

White

Structure

Spherical cells

Spherical cells

Elliptic cells in upper, spherical cells in middle and base

Distribution

Australia and South Africa

Australia and Taiwan

widespread

References

b, c

a, b, c, this study

a, b, c

  1. ,1987; b: Phillips et al., 1994; c: Phillips, 1997; +: Present; -: Absent.